Patent US278240A successfully refreshed from Google Patents.
Patent US2812804A successfully refreshed from Google Patents.
US2812804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable back rest for seat
Assignee: Individual
•
Filing: 1954-08-16
•
Granted: 1957-11-12
•
Expires: 1974-08-16
Abstract
No abstract record available.
Inventors
- 👤 Sandor Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:09
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/70; B60N2/7005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1007985A
Cited
US1291975A
Cited
US2060298A
Cited
US2139028A
Cited
US2260352A
Cited
US2182253A
Cited
US2307331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |