US2763487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Garrard Eng & Manufacturing Co Ltd
•
Filing: 1950-12-07
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Granted: 1956-09-18
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Expires: 1970-12-07
Abstract
No abstract record available.
Inventors
- 👤 Fortune Henry James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:50
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB404666A
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US2378086A
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US2309197A
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US2333414A
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GB549635A
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US2616708A
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US2545643A
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GB606458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |