Patent US2257648A successfully refreshed from Google Patents.
US2257648A
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Reinforcing element and method of manufacture
Assignee: National Standard Co
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Filing: 1939-11-18
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Granted: 1941-09-30
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Expires: 1959-11-18
Abstract
No abstract record available.
Inventors
- 👤 Robert C Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:33
CPC Classifications
D; D07; D07B; D07B1/00; D07B1/06; D07B1/0606; D07B1/062; B; B29; B29D; B29D29/00; B60; B60C; B60C9/00; B60C9/0007; B60C9/0042; B65; B65G; B65G15/00; B65G15/30; B65G15/32; B65G15/34; B65G15/36; D02; D02G; D02G3/00; D02G3/44; D02G3/48; D04; D04C; D04C1/00; D04C1/06; D04C1/12; D04C3/00; D04C3/40; D04C3/48; D07B1/0613; F; F16; F16G; F16G1/00; F16G1/06; F16G1/08; F16G1/12; B65G2201/00; B65G2201/06; D07B2201/00; D07B2201/20; D07B2201/2015; D07B2201/2023
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) | 1944-09-29 | 1945-03-31 | 1945-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-09-29 | 1949-03-31 | 1949-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-09-29 | 1953-03-31 | 1953-09-30 | $7700.00 | Window Closed / Lapsed |