US2682387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve spring assembly
Assignee: Individual
•
Filing: 1947-11-26
•
Granted: 1954-06-29
•
Expires: 1967-11-26
Abstract
No abstract record available.
Inventors
- 👤 Gaddoni Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:20
CPC Classifications
F; F01; F01L; F01L3/00; F01L3/10; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53552; Y10T29/53561; Y10T29/53578; Y10T29/53587
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US753755A
Cited
US1234967A
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FR492114A
Cited
US1327539A
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US1329321A
Cited
US1400027A
Cited
US1554227A
Cited
US1597029A
Cited
US1775069A
Cited
US1761925A
Cited
US1930894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-28 | 1957-12-28 | 1958-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-28 | 1961-12-28 | 1962-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-28 | 1965-12-28 | 1966-06-29 | $7700.00 | Window Closed / Lapsed |