US2692994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous glass life preserver
Assignee: Individual
•
Filing: 1949-09-23
•
Granted: 1954-11-02
•
Expires: 1969-09-23
Abstract
No abstract record available.
Inventors
- 👤 Ellis G King
- 👤 Edward R Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:50
CPC Classifications
B; B63; B63C; B63C9/00; B63C9/08; B63C9/11; B63C9/115; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR473987A
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US166477A
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US1044652A
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US1162214A
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US1291488A
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US1366344A
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US1336400A
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US1536627A
Cited
GB482809A
Cited
US2392576A
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US2433847A
Cited
US2405484A
Cited
US2660736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |