Patent US2456747A successfully refreshed from Google Patents.
US2456747A
Expired / Lapsed
US
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Speed governor
Assignee: Fairey Aviation Co Ltd
•
Filing: 1944-03-23
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Granted: 1948-12-21
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Expires: 1964-03-23
Abstract
No abstract record available.
Inventors
- 👤 Ira J Snader
- 👤 Forsyth Archibald Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:17
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US40754A
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US639470A
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US1749569A
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US2326308A
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US2330070A
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US2261145A
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US2160324A
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GB517117A
Cited
US2251388A
Cited
US2346856A
Cited
US2358894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |