Inventor
David D. Sayers
Inventor
Kentwood, MI, US
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A47Cprimary
A47CChairs56%
Y10TTechnical subjects covered by former us classification44%
PatentTitleYear
5,979,988'Modular chair construction and method of assembly'19995,873,634'Modular chair construction and method of assembly'19995,782,536'Modular chair construction and method of assembly'19985,630,647'Tension adjustment mechanism for chairs'19975,439,267'Chair with adjustable arm assemblies'1995Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1995–1999Patents assigned to STEELCASE INC (4)· patent assignee history
1995–1999Based in Kentwood, MI, US· patent location history
1999Patents assigned to STEELCASE DEV INC (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| STEELCASE INC | 4 | 1995–1999 |
| STEELCASE DEV INC | 1 | 1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kentwood, MI, US | 5 | 1995–1999 |