US2480198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical discharge tube
Assignee: Machlett Laboratories Inc
•
Filing: 1945-11-26
•
Granted: 1949-08-30
•
Expires: 1965-11-26
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:33
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/16; H01J35/18; H01J2235/00; H01J2235/12; H01J2235/122; H01J2235/1225; H01J2235/1262
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US924284A
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US1120493A
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US2056641A
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US1881448A
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US1917099A
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US1954065A
Cited
US2076012A
Cited
US2065055A
Cited
US2189279A
Cited
US2338388A
Cited
US2347424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |