US2665390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: General Electric Co
•
Filing: 1951-08-18
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Granted: 1954-01-05
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Expires: 1971-08-18
Abstract
No abstract record available.
Inventors
- 👤 Michael J Zunick
- 👤 Howard W Goodrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:58
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/112; H01J35/116; H01J2235/00; H01J2235/08; H01J2235/081; H01J2235/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1685928A
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US1712032A
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US1938946A
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US2459199A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |