US2544988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission
Assignee: Vickers Inc
•
Filing: 1949-03-12
•
Granted: 1951-03-13
•
Expires: 1969-03-12
Abstract
No abstract record available.
Inventors
- 👤 Duncan B Gardiner
- 👤 Ernst F Klessig
- 👤 Keel Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:55
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0003; F04C15/0023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1010956A
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US1635522A
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GB233064A
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GB274041A
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US2037894A
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US2141170A
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US2312891A
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US2335284A
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US2393223A
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US2384872A
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US2462732A
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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) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |