Patent US2980870A successfully refreshed from Google Patents.
US2980870A
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US
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Microwave field rotator
Assignee: General Precision Inc
•
Filing: 1957-02-20
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Granted: 1961-04-18
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Expires: 1977-02-20
Abstract
No abstract record available.
Inventors
- 👤 John F Zaleski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:03
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/165; H01P1/175
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB667290A
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US2645758A
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US2671884A
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US2719274A
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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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |