Patent US2633556A successfully refreshed from Google Patents.
US2633556A
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US
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Millimeter wave generator
Assignee: Individual
•
Filing: 1951-08-02
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Granted: 1953-03-31
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Expires: 1971-08-02
Abstract
No abstract record available.
Inventors
- 👤 Beverly D Kumpfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:33
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/48; H01J25/50; H01J25/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2443179A
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US2409038A
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US2423716A
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US2429291A
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US2452077A
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US2493423A
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US2513933A
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US2438194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |