US3046644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve spring depressor
Assignee: FLORENCE VIVIAN GEHRIG
•
Filing: 1960-05-12
•
Granted: 1962-07-31
•
Expires: 1980-05-12
Abstract
No abstract record available.
Inventors
- 👤 Albert K Gehrig
- 👤 Herbert W Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:03
CPC Classifications
B; B25; B25B; B25B11/00; B25B27/00; B25B27/14; B25B27/24; B25B27/26; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53552; Y10T29/53796; Y10T29/5383
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1600134A
Cited
US1734122A
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US1849538A
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US1970646A
Cited
US2056329A
Cited
US2173398A
Cited
US2177941A
Cited
GB750562A
Cited
US2901948A
Cited
US2895213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |