US2009218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous electric discharge device
Assignee: General Electric Co
•
Filing: 1935-03-05
•
Granted: 1935-07-23
•
Expires: 1955-03-05
Abstract
No abstract record available.
Inventors
- 👤 Baumhauer Heinrich
- 👤 Wiegand Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:49
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/24; H01J61/28; B; B23; B23D; B23D73/00; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4643; Y10T137/6416; Y10T137/6606
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) | 1938-07-22 | 1939-01-21 | 1939-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-07-22 | 1943-01-21 | 1943-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-07-22 | 1947-01-21 | 1947-07-23 | $7700.00 | Window Closed / Lapsed |