US2544715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave guide modulating and switching apparatus
Assignee: Unisys Corp
•
Filing: 1945-08-30
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Granted: 1951-03-13
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Expires: 1965-08-30
Abstract
No abstract record available.
Inventors
- 👤 Robert B Muchmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:56
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/10; H01P1/12; H01P1/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2396044A
Cited
US2433368A
Cited
US2407068A
Cited
US2415242A
Cited
US2423508A
Cited
US2423130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |