US2787723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric discharge device structure
Assignee: General Electric Co
•
Filing: 1952-02-23
•
Granted: 1957-04-02
•
Expires: 1972-02-23
Abstract
No abstract record available.
Inventors
- 👤 Edith B Fehr
- 👤 Allen P Haase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:07
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/42; H01J2893/00; H01J2893/0001; H01J2893/0002; H01J2893/0005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2051888A
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US2055471A
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US2119400A
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US2201840A
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US2338701A
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US2399982A
Cited
GB598856A
Cited
US2541273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |