US2997627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Frank Adam Electric Co
•
Filing: 1958-05-29
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Granted: 1961-08-22
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Expires: 1978-05-29
Abstract
No abstract record available.
Inventors
- 👤 Pruett W Ellegood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:38
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/20; H02B1/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US760077A
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US1162553A
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US1955287A
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US1958916A
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US2319415A
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US2363364A
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US2359247A
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US2424345A
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US2441485A
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US2648032A
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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) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |