US2690540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coaxial switch
Assignee: Individual
•
Filing: 1945-09-17
•
Granted: 1954-09-28
•
Expires: 1965-09-17
Abstract
No abstract record available.
Inventors
- 👤 Lawrence W Boothby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:15
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/10; H01P1/12; H01P1/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1809527A
Cited
FR852646A
Cited
US2235010A
Cited
US2426186A
Cited
US2407847A
Cited
US2419564A
Cited
US2451201A
Cited
US2499777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |