Horizontally supported planar surfaces

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Chemistry: molecular biology and microbiology
(Class No. 435)
Batteries: thermoelectric and photoelectric
(Class No. 136)
Miscellaneous hardware
(Class No. 016)
Electrical computers and digital data processing systems: input/output
(Class No. 710)
Electrical audio signal processing systems and devices
(Class No. 381)
Hydraulic and earth engineering
(Class No. 405)
Spring devices
(Class No. 267)
Abrading
(Class No. 451)
Ammunition and explosives
(Class No. 102)
Error detection/correction and fault detection/recovery
(Class No. 714)
Cleaning and liquid contact with solids
(Class No. 134)
Optics: image projectors
(Class No. 353)

Horology: time measuring systems or devices
(Class No. 368)
Inductor devices
(Class No. 336)
Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
(Class No. 411)
Plant husbandry
(Class No. 047)
Brushing, scrubbing, and general cleaning
(Class No. 015)
Amusement devices: games
(Class No. 463)
Valves and valve actuation
(Class No. 251)
Electrical computers and digital processing systems: memory
(Class No. 711)
Chemistry: natural resins or derivatives; peptides or proteins; lignins or reaction products thereof
(Class No. 530)
Photography
(Class No. 396)
Coded data generation or conversion
(Class No. 341)
Books, strips, and leaves
(Class No. 281)
Plastic and nonmetallic article shaping or treating: processes
(Class No. 264)
Pumps
(Class No. 417)
Optical waveguides
(Class No. 385)
Movable or removable closures
(Class No. 049)
Chemistry: analytical and immunological testing
(Class No. 436)
Brakes
(Class No. 188)
Electricity: conductors and insulators
(Class No. 174)
Geometrical instruments
(Class No. 033)
Prime-mover dynamo plants
(Class No. 290)
Coherent light generators
(Class No. 372)
Fluid sprinkling, spraying, and diffusing
(Class No. 239)
Receptacles
(Class No. 220)
Explosive and thermic compositions or charges
(Class No. 149)
Printed matter
(Class No. 283)
Radiation imagery chemistry: process, composition, or product thereof
(Class No. 430)
Coating processes
(Class No. 427)
Mechanical guns and projectors
(Class No. 124)
Compositions: coating or plastic
(Class No. 106)
Refrigeration
(Class No. 062)
Optical: systems and elements
(Class No. 359)
Organic compounds -- part of the class 532-570 series
(Class No. 564)
Beds
(Class No. 005)
Cutting
(Class No. 083)
Communications: directive radio wave systems and devices (e.g., radar, radio navigation)
(Class No. 342)
Metal fusion bonding
(Class No. 228)
Amplifiers
(Class No. 330)
Cutters, for shaping
(Class No. 407)
Solid material comminution or disintegration
(Class No. 241)
Optics: measuring and testing
(Class No. 356)
Radiant energy
(Class No. 250)
Electric power conversion systems
(Class No. 363)
Miscellaneous active electrical nonlinear devices, circuits, and systems
(Class No. 327)
Illumination
(Class No. 362)
Tools
(Class No. 081)
Organic compounds -- part of the class 532-570 series
(Class No. 548)
Facsimile and static presentation processing
(Class No. 358)
Games using tangible projectile
(Class No. 473)
Cutlery
(Class No. 030)
Organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system
(Class No. 987)
Fire escape, ladder, or scaffold
(Class No. 182)
Dynamic information storage or retrieval
(Class No. 369)
Photocopying
(Class No. 355)
Cutting by use of rotating axially moving tool
(Class No. 408)
Multicellular living organisms and unmodified parts thereof and related processes
(Class No. 800)
Electricity: motive power systems
(Class No. 318)
Electric lamp and discharge devices: systems
(Class No. 315)
Record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor
(Class No. 503)
Tent, canopy, umbrella, or cane
(Class No. 135)
Electricity: electrical systems and devices
(Class No. 361)
Image analysis
(Class No. 382)
Surgery
(Class No. 600)
Electrical resistors
(Class No. 338)
Surgery
(Class No. 604)
Clutches and power-stop control
(Class No. 192)
Motors: expansible chamber type
(Class No. 091)
Data processing: vehicles, navigation, and relative location
(Class No. 701)