Patent US2678685A successfully refreshed from Google Patents.
US2678685A
Expired / Lapsed
US
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Flat spring and structure
Assignee: Individual
•
Filing: 1948-02-27
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Granted: 1954-05-18
•
Expires: 1968-02-27
Abstract
No abstract record available.
Inventors
- 👤 Nicholas T Volsk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:22
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/282; F; F16; F16F; F16F1/00; F16F1/02; F16F1/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US176486A
Cited
US564531A
Cited
US612620A
Cited
US1451936A
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US1845980A
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US1850543A
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US1862221A
Cited
US1881997A
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US2104249A
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US2257367A
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US2280840A
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US2242540A
Cited
US2302479A
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US2306150A
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US2400426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |