Patent US2837636A successfully refreshed from Google Patents.
US2837636A
Expired / Lapsed
US
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Radio test signal generation
Assignee: Individual
•
Filing: 1954-03-08
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Granted: 1958-06-03
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Expires: 1974-03-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph D Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:14
CPC Classifications
H; H04; H04B; H04B17/00; H04B17/20; H04B17/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2106159A
Cited
GB467754A
Cited
US2213398A
Cited
US2409845A
Cited
US2366329A
Cited
US2546248A
Cited
US2393856A
Cited
US2491244A
Cited
US2678383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |