US2849639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric discharge device and method of making same
Assignee: General Electric Co
•
Filing: 1953-05-12
•
Granted: 1958-08-26
•
Expires: 1973-05-12
Abstract
No abstract record available.
Inventors
- 👤 Edith B Fehr
- 👤 Allen P Haase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:52
CPC Classifications
H; H01; H01J; H01J21/00; H01J21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307341A
Cited
US959120A
Cited
US1101728A
Cited
US1744616A
Cited
US1733504A
Cited
US2121600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |