US2692956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Totally-enclosed high-frequency generator
Assignee: Ohio Crankshaft Co
•
Filing: 1951-09-20
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Granted: 1954-10-26
•
Expires: 1971-09-20
Abstract
No abstract record available.
Inventors
- 👤 Edward J Kaczor
- 👤 Clarence F Schwan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:18
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1885546A
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US1906849A
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US2179561A
Cited
US2264268A
Cited
GB596604A
Cited
US2505795A
Cited
US2610992A
Cited
US2573383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-25 | 1958-04-26 | 1958-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-25 | 1962-04-26 | 1962-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-25 | 1966-04-26 | 1966-10-26 | $7700.00 | Window Closed / Lapsed |