Resources Contact Us Home Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE     Ratchet screwdriver D260599 Ratchet screwdriver Patent Drawings: Inventor: Wong Date Issued: September 8, 1981 Application: 06/021,984 Filed: March 19, 1979 Inventors: Wong; Siu W. (Kowloon, HK) Assignee: Ching Wah Metal Ware Factory Limited (Kowloon, HK) Primary Examiner: O'Keefe; Veronica Assistant Examiner: Attorney Or Agent: Wenderoth, Lind & Ponack U.S. Class: D8/82; D8/83; D8/85; D8/86 Field Of Search: D8/82; D8/83; D8/84; D8/85; D8/86; D8/87; D8/25; D8/29; 145/61L; 145/75; 81/177R; 81/121R; 81/436; 81/437; 81/438; 81/439; 81/440; 81/441; 81/442; 81/443; 81/444; 81/445; 81/446; 81/447; 81/448; 81/449; 81/450; 81/451; 81/452; 81/453; 81/454; 81/455; 81/456; 81/457; 81/458; 81/459; 81/460; 81/461 International Class: U.S Patent Documents: D204125; 902957; 1776928; 3080900 Foreign Patent Documents: Other References: Abstract: Claim: The ornamental design for a ratchet screwdriver, substantially as shown. Description: FIG. 1 is a perspective view of the ratchet screwdriver of this invention from above and one side; FIG. 2 is a perspective view thereof from below and the other side and FIG. 3 is a side elevation thereof. * * * * *       Recently Added Patents Audit trail tools for transaction systems Logic diagram display method, program, and apparatus System and method for identifying semantic intent from acoustic information Particulate monitor Process for forming a coated layer on a toric surface of an optical article Creating a voice response grammar from a user grammar Tobacco humidifier   Randomly Featured Patents Stacked family molding and subsequent assembly process Arrangement for projecting an identifying image on to a film Control for operating a plurality of window operators Preparation of nylon 66 polymers from 1,8-diazacyclotetradecane-2,7-dione Elastomer toughened radiation curable adhesives Practice golf club Spray nozzle Seat Robotic television-camera dolly system Treatment of chromium-containing iron alloys © 2006. PatentGenius. All Rights Reserved.