US3229145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable precision spark gap
Assignee: ABB Inc USA
•
Filing: 1962-11-01
•
Granted: 1966-01-11
•
Expires: 1982-11-01
Abstract
No abstract record available.
Inventors
- 👤 Jensen Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:56
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/36; H01J17/00; H01T; H01T4/00; H01T4/10; H01T4/12; H01J2893/00; H01J2893/0059
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1022192A
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US2457102A
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US2540399A
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US2670451A
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US2703374A
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US2691742A
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US2717974A
Cited
US2778967A
Cited
US2740915A
Cited
US2866119A
Cited
US2958805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |