Patent US2367940A successfully refreshed from Google Patents.
US2367940A
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Electric discharge apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1939-09-07
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Granted: 1945-01-23
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Expires: 1959-09-07
Abstract
No abstract record available.
Inventors
- 👤 Finn H Gulliksen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:05
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; H; H01; H01J; H01J2893/00; H01J2893/0072; H01J2893/0073; H01J2893/0074; H01J2893/0087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-01-23 | 1948-07-24 | 1949-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-01-23 | 1952-07-24 | 1953-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-01-23 | 1956-07-24 | 1957-01-23 | $7700.00 | Window Closed / Lapsed |