Patent US2670715A successfully refreshed from Google Patents.
US2670715A
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Follow-up type fluid servomotor
Assignee: British Messier Ltd
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Filing: 1949-02-23
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Granted: 1954-03-02
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Expires: 1969-02-23
Abstract
No abstract record available.
Inventors
- 👤 Conway Hugh Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:07
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/08; F15B9/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2503956A
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US773365A
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GB344037A
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US2152084A
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US2227273A
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US2449400A
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US2424901A
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US2437536A
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US2457721A
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US2472547A
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US2462994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |