Patent US3067376A successfully refreshed from Google Patents.
US3067376A
Expired / Lapsed
US
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Frequency transducer
Assignee: Daystrom Inc
•
Filing: 1959-12-18
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Granted: 1962-12-04
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Expires: 1979-12-18
Abstract
No abstract record available.
Inventors
- 👤 Victor B Kwast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:09
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/08; H03D3/10; G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/4802; G01R; G01R23/00; G01R23/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |