US2443635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio-frequency switch assembly
Assignee: Individual
•
Filing: 1944-06-07
•
Granted: 1948-06-22
•
Expires: 1964-06-07
Abstract
No abstract record available.
Inventors
- 👤 Henry D Morris
- 👤 Phillip A Vonada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:18
CPC Classifications
H; H01; H01H; H01H25/00; H01P; H01P1/00; H01P1/10; H01P1/12; H01P1/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1534161A
Cited
US1523903A
Cited
GB298182A
Cited
US1819831A
Cited
US1902700A
Cited
US2344780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-22 | 1951-12-22 | 1952-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-22 | 1955-12-22 | 1956-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-22 | 1959-12-22 | 1960-06-22 | $7700.00 | Window Closed / Lapsed |