Inventor · disambiguated record
William C. Blackman
Also filed as: BLACKMAN WILLIAM C · BLACKMAN WILLIAM CECIL
15 granted patents·4 pending applications·541 citations·filing 1983–2007
95Inventor score
Technology areasG01B
Top patents by PatentIndex Score
19 records- 0193US7490414B2Tape measure with extended standoutCOOPER BRANDS INC·Filed 2007·Granted Feb 17, 2009·28 cites·10 claims
- 0291US4527334APower return tapeCOOPER IND INC·Filed 1983·Granted Jul 9, 1985·100 cites·10 claims
- 0390US7131214B1Tape measure mounting clipCOOPER BRANDS INC·Filed 2005·Granted Nov 7, 2006·30 cites·15 claims
- 0489US7159331B2Tape measure with extended standoutCOOPER BRANDS INC·Filed 2004·Granted Jan 9, 2007·42 cites·18 claims
- 0589US6718649B1Tape measure housing with postCOOPER BRANDS INC·Filed 2003·Granted Apr 13, 2004·42 cites·22 claims
- 0686USD319347SCombined key chain and measuring tapeCOOPER IND INC·Filed 1988·Granted Aug 27, 1991·27 cites·1 claims
- 0783US4976048ATape measure lockCOOPER IND INC·Filed 1988·Granted Dec 11, 1990·40 cites·15 claims
- 0882US5806202ARetractable tape measure with sliding lockCOOPER IND INC·Filed 1996·Granted Sep 15, 1998·55 cites·9 claims
- 0981US6811109B1Retainer for power-return tape measure springCOOPER BRANDS INC·Filed 2003·Granted Nov 2, 2004·26 cites·12 claims
- 1079US5600894AHooking device for a measuring tapeCOOPER IND INC·Filed 1995·Granted Feb 11, 1997·56 cites·17 claims
- 1175USD476913STape measure housingCOOPER BRANDS INC·Filed 2002·Granted Jul 8, 2003·23 cites·1 claims
- 1274USD397950STape measure housingCOOPER IND INC·Filed 1997·Granted Sep 8, 1998·20 cites·1 claims
- 1370USD471473STape measure housingCOOPER BRANDS INC·Filed 2002·Granted Mar 11, 2003·20 cites·1 claims
- 1469US5794357AOne piece compound lock for tape measureCOOPER IND INC·Filed 1997·Granted Aug 18, 1998·32 cites·13 claims
- 1540US2007006476A1Tape measure with extended standoutCRITELLI JAMES M·Filed 2006·Application pending·0 cites
- 1640US2005028397A1Tape measure housing with grip elementFiled 2004·Application pending·0 cites
- 1738US2003233762A1Tape measure housing with grip elementFiled 2002·Application pending·0 cites
- 1831USD412127SPost levelCOOPER IND INC·Filed 1998·Granted Jul 20, 1999·0 cites·1 claims
- 1931US2005252020A1Tape measure using flexible tape having extended widthCRITELLI JAMES M·Filed 2004·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when William C. Blackman files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →