US2451900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical discharge device and base
Assignee: Westinghouse Electric Corp
•
Filing: 1946-08-20
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Granted: 1948-10-19
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Expires: 1966-08-20
Abstract
No abstract record available.
Inventors
- 👤 Zambakian Irving
- 👤 Jr Ward W Watrous
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:01
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/50; H01J5/54; H01J5/56
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) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |