Patent US3529612A successfully refreshed from Google Patents.
US3529612A
Expired / Lapsed
US
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Pulse frequency converter
Assignee: Honeywell Inc
•
Filing: 1968-02-23
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Granted: 1970-09-22
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Expires: 1988-02-23
Abstract
No abstract record available.
Inventors
- 👤 Roger A Rausch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:16
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/02; F15C1/04; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2065; Y10T137/2229; Y10T137/224
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3379204A
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US3426782A
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US3426781A
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US3465775A
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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) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |