Patent US2749560A successfully refreshed from Google Patents.
US2749560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Life saving device
Assignee: Individual
•
Filing: 1954-06-16
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Granted: 1956-06-12
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Expires: 1974-06-16
Abstract
No abstract record available.
Inventors
- 👤 Amos L Craft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:37
CPC Classifications
B; B63; B63C; B63C9/00; B63C9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US174655A
Cited
US563747A
Cited
US1078640A
Cited
FR471166A
Cited
GB234219A
Cited
FR679396A
Cited
US2327168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |