Patent US3463544A successfully refreshed from Google Patents.
US3463544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthopedic seat back
Assignee: Individual
•
Filing: 1968-04-22
•
Granted: 1969-08-26
•
Expires: 1988-04-22
Abstract
No abstract record available.
Inventors
- 👤 Edward Froelich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:21
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/64; B60N2/66; B60N2/666
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1205802A
Cited
US1264265A
Cited
US1789821A
Cited
US2756809A
Cited
US3321241A
Cited
US3378299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |