US2763806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor electric discharge device
Assignee: Hanovia Chemical and Manufacturing Co
•
Filing: 1950-11-24
•
Granted: 1956-09-18
•
Expires: 1970-11-24
Abstract
No abstract record available.
Inventors
- 👤 Jr William T Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:41
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/70; H01J61/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1189194A
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US2020914A
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US2182732A
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US1874753A
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US1990146A
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US2089555A
Cited
US2001501A
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US2061824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |