US2576943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave guide modulation apparatus
Assignee: Unisys Corp
•
Filing: 1945-01-31
•
Granted: 1951-12-04
•
Expires: 1965-01-31
Abstract
No abstract record available.
Inventors
- 👤 Frederic A Jenks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:06
CPC Classifications
H; H03; H03C; H03C7/00; H03C7/02; G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2129712A
Cited
FR802756A
Cited
US2106771A
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US2267951A
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US2297512A
Cited
US2323735A
Cited
US2396044A
Cited
US2426992A
Cited
US2415242A
Cited
US2423130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-03 | 1955-06-04 | 1955-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-03 | 1959-06-04 | 1959-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-03 | 1963-06-04 | 1963-12-04 | $7700.00 | Window Closed / Lapsed |