US2553090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire escape drum and cable and hydraulic governor means therefor
Assignee: OSCAR M WEATHERBY
•
Filing: 1947-10-20
•
Granted: 1951-05-15
•
Expires: 1967-10-20
Abstract
No abstract record available.
Inventors
- 👤 John L Holley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:44
CPC Classifications
A; A62; A62B; A62B1/00; A62B1/06; A62B1/08; A62B1/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US90454A
Cited
US242901A
Cited
US374596A
Cited
US701094A
Cited
US838169A
Cited
US1985889A
Cited
US2189189A
Cited
US2334908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |