US2874887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Escape ladders
Assignee: Individual
•
Filing: 1957-08-01
•
Granted: 1959-02-24
•
Expires: 1977-08-01
Abstract
No abstract record available.
Inventors
- 👤 Pompilio Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:05
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/52; E06C1/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US124541A
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US595453A
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US694771A
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US1217279A
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US1441529A
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US1437691A
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US1567447A
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US2127949A
Cited
US2182277A
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US2548843A
Cited
US2798653A
Cited
US2638260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |