Inventor · disambiguated record
John Ditcher
Also filed as: DITCHER JOHN
7 granted patents·341 citations·filing 1974–1983
89Inventor score
Top patents by PatentIndex Score
7 records- 0195US4103901AMolded pleated gasket and device for installing same on pipeLOK CORP A·Filed 1976·Granted Aug 1, 1978·87 cites·9 claims
- 0289US4088361ALifting arrangements for massive objectsLOK CORP A·Filed 1976·Granted May 9, 1978·41 cites·6 claims
- 0388US4508355AGasket suitable for use in sealing exterior of sewer pipe to opening in manhole, and method and system employing sameA LOK PROD·Filed 1983·Granted Apr 2, 1985·67 cites·1 claims
- 0488US4159829AGasket seal between sewer pipe and manhole openingA LOK PROD·Filed 1977·Granted Jul 3, 1979·57 cites·4 claims
- 0580US3980311AJoint assembly for vertically aligned sectionalized manhole structures incorporating D-shaped gasketsLOK CORP A·Filed 1975·Granted Sep 14, 1976·31 cites·8 claims
- 0673US3974615AApparatus for forming steps in manholes and the likeLOK CORP A·Filed 1974·Granted Aug 17, 1976·30 cites·4 claims
- 0767US4073048AGasket seal between sewer pipe and manhole openingLOK CORP A·Filed 1976·Granted Feb 14, 1978·28 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when John Ditcher 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 →