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US2475649A
Expired / Lapsed
US
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Radio circuit testing system
Assignee: Individual
•
Filing: 1945-02-19
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Granted: 1949-07-12
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Expires: 1965-02-19
Abstract
No abstract record available.
Inventors
- 👤 Roy J Teetsell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:26
CPC Classifications
H; H04; H04B; H04B17/00; H04B17/20; H04B17/201
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1686451A
Cited
US2007992A
Cited
US2023947A
Cited
US2117582A
Cited
US2165064A
Cited
US2227381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |