US2257646A
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Assignee: National Standard Co
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Filing: 1939-11-09
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Granted: 1941-09-30
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Expires: 1959-11-09
Abstract
No abstract record available.
Inventors
- 👤 Robert C Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:39
CPC Classifications
D; D07; D07B; D07B1/00; D07B1/06; D07B1/0606; D07B1/0613; B; B60; B60C; B60C9/00; B60C9/0007; D02; D02G; D02G3/00; D02G3/44; D02G3/48; D07B2201/00; D07B2201/10; D07B2201/104; D07B2201/1092; D07B2201/1096; D07B2201/20; D07B2201/2047; D07B2201/2048; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10855; Y10T152/10873
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 |