US1725281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical-discharge device
Assignee: General Electric Co
•
Filing: 1923-02-26
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Granted: 1929-08-20
•
Expires: 1943-02-26
Abstract
No abstract record available.
Inventors
- 👤 Kenneth H Kingdon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:45
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/68; H01J17/00; H01J17/02; H01J17/22; H01J17/26
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) | 1932-08-19 | 1933-02-18 | 1933-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-08-19 | 1937-02-18 | 1937-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-08-19 | 1941-02-18 | 1941-08-20 | $7700.00 | Window Closed / Lapsed |