Patent US2303369A successfully refreshed from Google Patents.
Patent US2683259A successfully refreshed from Google Patents.
US2683259A
Expired / Lapsed
US
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Radio valve holder
Assignee: McMurdo Instrument Co Ltd
•
Filing: 1951-08-21
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Granted: 1954-07-06
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Expires: 1971-08-21
Abstract
No abstract record available.
Inventors
- 👤 Lowther Oliver Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:41
CPC Classifications
H; H01; H01R; H01R33/00; H01R33/74; H01R33/76; H01R33/7607; H01R33/7614; H01R33/7628
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1045280A
Cited
US2240658A
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US2376625A
Cited
US2333694A
Cited
US2493658A
Cited
US2514562A
Cited
US2496866A
Cited
US2526869A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |