Inventor · disambiguated record
Sigurd A. Johnson
Also filed as: JOHNSON SIGURD A · SITLER RICHARD W
5 granted patents·149 citations·filing 1978–1988
82Inventor score
Files withPLAN HOLD CORP5
Top patents by PatentIndex Score
5 records- 0190US4418378ALight boxPLAN HOLD CORP·Filed 1981·Granted Nov 29, 1983·88 cites·10 claims
- 0267US4805073ACable terminal box constructionPLAN HOLD CORP·Filed 1988·Granted Feb 14, 1989·34 cites·13 claims
- 0351US4155607AVertical filing systemPLAN HOLD CORP·Filed 1978·Granted May 22, 1979·13 cites·14 claims
- 0437US4508305ATilt lock means for a drafting tablePLAN HOLD CORP·Filed 1983·Granted Apr 2, 1985·13 cites·16 claims
- 0527US4303284AIndex guide means for a filing systemPLAN HOLD CORP·Filed 1980·Granted Dec 1, 1981·1 cites·3 claims
Join the waitlist — get patent alerts
Get an alert when Sigurd A. Johnson 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 →