Patent US2657705A successfully refreshed from Google Patents.
US2657705A
Expired / Lapsed
US
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Remotely controllable crankcase drain valve
Assignee: Individual
•
Filing: 1950-10-19
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Granted: 1953-11-03
•
Expires: 1970-10-19
Abstract
No abstract record available.
Inventors
- 👤 August A Gerhard
- 👤 Willard A Klemme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:38
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/04; F01M11/0408; F16; F16N; F16N21/00; F16N21/06; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6855; Y10T137/6881; Y10T137/7043; Y10T137/7062; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7882; Y10T137/8593; Y10T137/87917; Y10T137/88046
Claims Analysis
Total Claims: 0
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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) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |