US2537383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for extinguishing a discharge tube having a mercury cathode
Assignee: Hartford National Bank and Trust Co
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Filing: 1946-04-19
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Granted: 1951-01-09
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Expires: 1966-04-19
Abstract
No abstract record available.
Inventors
- 👤 Adrianus Cornelis Van Dorsten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:24
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/06; H02M1/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |