US2456870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit for electric discharge device
Assignee: General Electric Co
•
Filing: 1944-08-22
•
Granted: 1948-12-21
•
Expires: 1964-08-22
Abstract
No abstract record available.
Inventors
- 👤 Victor J Francis
- 👤 Evan H Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:23
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/36; H05B41/38; H05B41/40; H05B41/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2046980A
Cited
US2103039A
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US1930123A
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US2178011A
Cited
US2043023A
Cited
US2170447A
Cited
US2339307A
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US2278256A
Cited
US2339051A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |