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US2794952A
Expired / Lapsed
US
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Within limits frequency response tester
Assignee: GTE Sylvania Inc
•
Filing: 1953-09-30
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Granted: 1957-06-04
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Expires: 1973-09-30
Abstract
No abstract record available.
Inventors
- 👤 Norman J Golden
- 👤 Ants T Piip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:18
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/26; G01R31/2607; G01R31/2608; G01R31/2612; G01R27/00; G01R27/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2525675A
Cited
US2626980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |