US2094450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas discharge device
Assignee: RCA Corp
•
Filing: 1933-06-29
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Granted: 1937-09-28
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Expires: 1953-06-29
Abstract
No abstract record available.
Inventors
- 👤 Geffcken Heinrich
- 👤 Richter Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:07
CPC Classifications
H; H01; H01J; H01J3/00; H01J3/02; H01J3/025; H01J2893/00; H01J2893/0061
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) | 1940-09-27 | 1941-03-29 | 1941-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-09-27 | 1945-03-29 | 1945-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-09-27 | 1949-03-29 | 1949-09-28 | $7700.00 | Window Closed / Lapsed |