Patent US2356970A successfully refreshed from Google Patents.
US2356970A
Expired / Lapsed
US
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Pilot means for liquid level controls and the like
Assignee: Fisher Governor Co
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Filing: 1942-02-26
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Granted: 1944-08-29
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Expires: 1962-02-26
Abstract
No abstract record available.
Inventors
- 👤 Glenn F Brockett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:23
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/04; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T137/7287; Y10T137/7358; Y10T137/7368; Y10T137/7371; Y10T137/7381; Y10T137/7384; Y10T137/742; Y10T137/7423
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) | 1947-08-29 | 1948-02-28 | 1948-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-08-29 | 1952-02-28 | 1952-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-08-29 | 1956-02-28 | 1956-08-29 | $7700.00 | Window Closed / Lapsed |