Patent US2550562A successfully refreshed from Google Patents.
US2550562A
Expired / Lapsed
US
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Life preserver
Assignee: Uniroyal Inc
•
Filing: 1948-02-05
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Granted: 1951-04-24
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Expires: 1968-02-05
Abstract
No abstract record available.
Inventors
- 👤 Victor H Hurt
- 👤 Helen T Sweet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:02
CPC Classifications
B; B63; B63C; B63C9/00; B63C9/08; B63C9/11; B63C9/125; B63C9/1255
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1096573A
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US1150335A
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US1245033A
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DE420737C
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US1938610A
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US2046335A
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US2128423A
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US2508303A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |