Patent US2873055A successfully refreshed from Google Patents.
US2873055A
Expired / Lapsed
US
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Fire escape device
Assignee: Individual
•
Filing: 1955-11-28
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Granted: 1959-02-10
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Expires: 1975-11-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:04
CPC Classifications
A; A62; A62B; A62B1/00; A62B1/06; A62B1/08; A62B1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US374596A
Cited
US516116A
Cited
US716109A
Cited
US859266A
Cited
US2416801A
Cited
US2553090A
Cited
US2703219A
Cited
US2646964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |