Patent US1862793A successfully refreshed from Google Patents.
US1862793A
Expired / Lapsed
US
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Valve-spring lifter
Assignee: Individual
•
Filing: 1930-05-29
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Granted: 1932-06-14
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Expires: 1950-05-29
Abstract
No abstract record available.
Inventors
- 👤 Harry W Kulp
- 👤 Martin C Dellinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:56
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/14; B25B27/24; B25B27/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992; Y10T29/53; Y10T29/53552; Y10T29/53561; Y10T29/53578
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1935-06-14 | 1935-12-14 | 1936-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-06-14 | 1939-12-14 | 1940-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-06-14 | 1943-12-14 | 1944-06-14 | $7700.00 | Window Closed / Lapsed |