US2490320A
Expired / Lapsed
US
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Method for adjusting spring mechanisms
Assignee: FIRST IND CORP
•
Filing: 1946-09-25
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Granted: 1949-12-06
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Expires: 1966-09-25
Abstract
No abstract record available.
Inventors
- 👤 Robert W Pashby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:31
CPC Classifications
H; H01; H01H; H01H11/00; H01H11/0062; F; F16; F16F; F16F1/00; F16F1/02; F16F1/18; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49004; Y10T29/49105; Y10T29/49609; Y10T29/49764; Y10T29/49771; Y10T29/49776
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1336543A
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US1567254A
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US1615117A
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US1869184A
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US2200348A
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US2364989A
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US2355468A
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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) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |