US2564741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machine
Assignee: Individual
•
Filing: 1947-03-06
•
Granted: 1951-08-21
•
Expires: 1967-03-06
Abstract
No abstract record available.
Inventors
- 👤 Vermillion Lewis Safford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:36
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US251555A
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US265784A
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US432142A
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US467048A
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US859369A
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US1017510A
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US1464684A
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US2093077A
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US2137738A
Cited
US2388498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |