US3068461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency converting system and method
Assignee: Epsco Inc
•
Filing: 1956-08-07
•
Granted: 1962-12-11
•
Expires: 1976-08-07
Abstract
No abstract record available.
Inventors
- 👤 Bernard M Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:31
CPC Classifications
H; H03; H03M; H03M1/00; G; G06; G06F; G06F7/00; G06F7/60; G06F7/68; H03M1/06; H03M1/0617
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2665411A
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US2738461A
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US2694801A
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US2769595A
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US2844790A
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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) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |