US3534516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demountable partition wall
Assignee: RICHARD A COOPER
•
Filing: 1967-12-11
•
Granted: 1970-10-20
•
Expires: 1987-12-11
Abstract
No abstract record available.
Inventors
- 👤 Richard A Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:56
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1960078A
Cited
US2125136A
Cited
US2681716A
Cited
US2990040A
Cited
US3323262A
Cited
US3310920A
Cited
US3358412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |