US2478119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous discharge tube
Assignee: Motors Liquidation Co
•
Filing: 1945-04-20
•
Granted: 1949-08-02
•
Expires: 1965-04-20
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Mitchel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:22
CPC Classifications
H; H01; H01T; H01T4/00; H01T4/10; H01T4/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1531301A
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US2003609A
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US2117636A
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US2300931A
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US2365518A
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US2365517A
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US2414622A
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US2374677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |