US2547446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable seat
Assignee: Heywood Wakefield Co
•
Filing: 1945-03-17
•
Granted: 1951-04-03
•
Expires: 1965-03-17
Abstract
No abstract record available.
Inventors
- 👤 Walter B Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:27
CPC Classifications
B; B61; B61D; B61D33/00; B61D33/0057; B61D33/0078
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE568702C
Cited
US259504A
Cited
US1240192A
Cited
US1510376A
Cited
US1609746A
Cited
FR758281A
Cited
US2047682A
Cited
FR769785A
Cited
US2164918A
Cited
US2270172A
Cited
US2270576A
Cited
US2291677A
Cited
US2337557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |