US2956160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Millimeter wave crystal rectifier
Assignee: AT&T Inc
•
Filing: 1957-12-18
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Granted: 1960-10-11
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Expires: 1977-12-18
Abstract
No abstract record available.
Inventors
- 👤 William M Sharpless
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:46
CPC Classifications
H; H03; H03D; H03D9/00; H03D9/06; H03D9/0608; H03D9/0616; H01; H01P; H01P5/00; H01P5/08; H01P5/10; H01P5/103; H03D7/00; H03D7/02; H03D9/02; H10; H10D; H10D99/00; H10W; H10W72/00; H10W72/20; Y; Y10; Y10T; Y10T403/00; Y10T403/55
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2503256A
Cited
US2546061A
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US2639393A
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US2783378A
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US2777949A
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US2807731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |