US2518879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen thyratron
Assignee: Individual
•
Filing: 1945-02-03
•
Granted: 1950-08-15
•
Expires: 1965-02-03
Abstract
No abstract record available.
Inventors
- 👤 Kenneth J Germeshausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:03
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/50; H01J17/52; H01J17/54; H01J17/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1962159A
Cited
US2032179A
Cited
US2166817A
Cited
US2106847A
Cited
GB502534A
Cited
US2192162A
Cited
US2112591A
Cited
US2396807A
Cited
US2399003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |