US2415980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic discharge device
Assignee: Westinghouse Electric Corp
•
Filing: 1943-03-09
•
Granted: 1947-02-18
•
Expires: 1963-03-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Ward W Watrous
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:44
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/50; H01J17/52; H01J17/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1619318A
Cited
US1592612A
Cited
US1930122A
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US1924319A
Cited
US2080284A
Cited
US2141654A
Cited
US2212643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-17 | 1950-08-19 | 1951-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-17 | 1954-08-19 | 1955-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-17 | 1958-08-19 | 1959-02-18 | $7700.00 | Window Closed / Lapsed |