Patent US3984500A successfully refreshed from Google Patents.
Patent US2040674A successfully refreshed from Google Patents.
US2040674A
Expired / Lapsed
US
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Contact pin for vacuum tubes and method of molding
Assignee: General Electric Co
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Filing: 1929-09-11
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Granted: 1936-05-12
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Expires: 1949-09-11
Abstract
No abstract record available.
Inventors
- 👤 Spencer W Severance
- 👤 Joseph W Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:10
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/50; B; B29; B29C; B29C43/00; B29C43/02; B29C43/18; B29C70/00; B29C70/68; B29C70/72; B29C2793/00; B29C2793/009; B29L; B29L2031/00; B29L2031/34; B29L2031/3406; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49147; Y10T29/49151
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-05-12 | 1939-11-11 | 1940-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-05-12 | 1943-11-11 | 1944-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-05-12 | 1947-11-11 | 1948-05-12 | $7700.00 | Window Closed / Lapsed |