Patent US4880622A successfully refreshed from Google Patents.
US2660718A
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Microwave protective system
Assignee: General Electric Co
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Filing: 1949-12-30
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Granted: 1953-11-24
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Expires: 1969-12-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry R Summerhayes
- 👤 Ellsworth D Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:16
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/12; G08; G08B; G08B13/00; G08B13/22; G08B13/24; G08B13/2491
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1958886A
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US2206923A
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US2197028A
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US2272839A
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US2247246A
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GB524526A
Cited
US2350331A
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GB581687A
Cited
US2412822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |