Assignee
WALKER ROBERT J
US·5 granted patents·44 citations·filing 1976–2011
Top patents by PatentIndex Score
5 records- 0191US8739988B2Pinned connection system for crane column segmentsWALKER ROBERT J·Filed 2011·Granted Jun 3, 2014·14 cites·20 claims
- 0284US8839966B2Folding jib main strut and transportable reeved strut capsWALKER ROBERT J·Filed 2010·Granted Sep 23, 2014·9 cites·16 claims
- 0370US8127949B2Crane backstay spreaderWALKER ROBERT J·Filed 2010·Granted Mar 6, 2012·5 cites·23 claims
- 0447US4292714AEasy opening and secure closing closureWALKER ROBERT J·Filed 1980·Granted Oct 6, 1981·16 cites·20 claims
- 0530USD246100SAuxiliary sun visorWALKER ROBERT J·Filed 1976·Granted Oct 18, 1977·0 cites·1 claims
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