Patent US2472131A successfully refreshed from Google Patents.
US2472131A
Expired / Lapsed
US
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Vacuum tube socket
Assignee: Individual
•
Filing: 1946-01-15
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Granted: 1949-06-07
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Expires: 1966-01-15
Abstract
No abstract record available.
Inventors
- 👤 Toth Emerick
- 👤 George H Burbage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:20
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)
US1719288A
Cited
GB358788A
Cited
US2004610A
Cited
US2004076A
Cited
FR766524A
Cited
US2072939A
Cited
US2321470A
Cited
GB559562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |