Inventor
Douglas Scheerhorn
Inventor
Grand Rapids, MI, US
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E05Bprimary
E05BLocks44%
E04BGeneral building constructions19%
A47BTables13%
Y10TTechnical subjects covered by former us classification13%
E05CBolts or fastening devices for wings, specially for doors or windows6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
PatentTitleYear
6,546,684'Partition panel'20036,276,103'Cover panel brace for partition systems'20016,098,358'Knock-down portable partition system'20005,056,876'Drawer lock and interlock mechanism'19914,960,309'Drawer lock and interlock mechanism'19904,471,638'Front removable lock'19844,457,569'Lock arrangement for office furniture units'19844,445,729'Over-centered lock arrangement for office furniture units'19844,057,307'Locking system linkage adjustment'19773,998,508'Gang locking mechanism'19763,941,441'Drawer interlock system'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1991Patents assigned to STEELCASE INC (8)· patent assignee history
1976–1984Based in Grand Rapids, MI, US· patent location history
1990–2003Based in Byron Center, MI, US· patent location history
2000–2001Patents assigned to STEELCASE DEV INC (2)· patent assignee history
2003Patents assigned to STEELCASE DEV CORP (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| STEELCASE INC | 8 | 1976–1991 |
| STEELCASE DEV INC | 2 | 2000–2001 |
| STEELCASE DEV CORP | 1 | 2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Grand Rapids, MI, US | 6 | 1976–1984 |
| Byron Center, MI, US | 5 | 1990–2003 |