US2904701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical generator and driving engine unitary therewith
Assignee: Individual
•
Filing: 1957-06-07
•
Granted: 1959-09-15
•
Expires: 1977-06-07
Abstract
No abstract record available.
Inventors
- 👤 Stirling A Colgate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:52
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/18; H02K7/1869; H02K7/1876; H02K7/1884; F; F02; F02B; F02B71/00; F02B71/04; F02B63/00; F02B63/04; F02B63/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2246701A
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US2498990A
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US2605605A
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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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |