US2543948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring caster
Assignee: Individual
•
Filing: 1946-01-16
•
Granted: 1951-03-06
•
Expires: 1966-01-16
Abstract
No abstract record available.
Inventors
- 👤 Edward L Wiedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:55
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/58; B60D1/66; B60S; B60S9/00; B60S9/14; B60S9/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1237507A
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US1429187A
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US1480588A
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US1777565A
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US2033298A
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US2139503A
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US2087299A
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US2174465A
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US2227875A
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US2271304A
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US2256038A
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US2350624A
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US2403338A
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US2410570A
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US2447659A
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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) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |