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Publication numberUSD233437 S
Publication typeGrant
Publication dateOct 29, 1974
Filing dateJul 24, 1972
Publication numberUS D233437 S, US D233437S, US-S-D233437, USD233437 S, USD233437S
InventorsLawrence M. Levin
Original AssigneeCox Systems Limited
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Audio visual work desk for dental instruction
US D233437 S
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Description  (OCR text may contain errors)

Des. 233,437 Patented Oct. 29, 1974 United States Patent 0 ce AUDIO VISUAL WURK DESK FOR DENTAL INSTRUCTION David C. Jenkins and Lawrence M. L

gtoll, a, assignors to Cox Systems Limited, Stoney Creek, Ontario, Canada evin, Burlin Ontario, Canad Filed July 24, 1972, Ser. No. 274,773

Term of patent 14 years Int. Cl. D24--01 US. Cl. D24-1 B Des. 233,437

use a I i {g x1 z f FIG 3 FIG. 1 is a front perspective view of an audio visual References Cited work desk for dental instruction showing our design; UNITED STATES PATENTS FIG. 2 is a rear perspective view; and F k f th 1 t D. 56,763 12/1920 Nason D6189 in 1 a from perspective vlew ta en mm c ef 99958 6/1936 Morgan D6 170 We D. 176,828 1/1956 Smith D6-139 The ornamental design for an audio visual work desk g2 g ggrribggntal instruction, substantially as shown and de- D. 225:996 H1973 Schwartz D24 1 B D. 226,483 3/1973 Schwartz D24-1 B D. 227,891 7/1973 Welsh D24-1 B BRUCE W. DUNKINS, Primary Examiner