Patent US2057797A successfully refreshed from Google Patents.
US2057797A
Expired / Lapsed
US
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Repair patch for tire casings
Assignee: SHERRY SPRINGER
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Filing: 1931-05-25
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Granted: 1936-10-20
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Expires: 1951-05-25
Abstract
No abstract record available.
Inventors
- 👤 John T Springer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:22
CPC Classifications
B; B29; B29C; B29C73/00; B29C73/04; B29C73/10; B29C73/24; B29C73/30; B29C73/305; B29L; B29L2030/00; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10882
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-10-20 | 1940-04-20 | 1940-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-10-20 | 1944-04-20 | 1944-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-10-20 | 1948-04-20 | 1948-10-20 | $7700.00 | Window Closed / Lapsed |