Assignee
AMERICAN HOLTZKRAFT INC
US·5 granted patents·142 citations·filing 1989–2003
Technology mixA45B5
Top patents by PatentIndex Score
5 records- 0174US5020557ARotating canopy umbrellaAMERICAN HOLTZKRAFT INC·Filed 1990·Granted Jun 4, 1991·61 cites·3 claims
- 0270US6802325B1Closeable thatched umbrellaAMERICAN HOLTZKRAFT INC·Filed 2000·Granted Oct 12, 2004·14 cites·9 claims
- 0365US7481232B2Main event umbrellaAMERICAN HOLTZKRAFT INC·Filed 2003·Granted Jan 27, 2009·10 cites·24 claims
- 0464US4928718AUmbrellaAMERICAN HOLTZKRAFT INC·Filed 1989·Granted May 29, 1990·32 cites·8 claims
- 0555US5711332AStrutless umbrellaAMERICAN HOLTZKRAFT INC·Filed 1996·Granted Jan 27, 1998·25 cites·20 claims
Join the waitlist — get patent alerts
Get an alert when AMERICAN HOLTZKRAFT INC files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →