US2426680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for discharge devices
Assignee: Zenith Electronics LLC
•
Filing: 1944-01-13
•
Granted: 1947-09-02
•
Expires: 1964-01-13
Abstract
No abstract record available.
Inventors
- 👤 Gilbert E Gustafson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:50
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/02; H03G3/04; H03G3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2214614A
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US2262916A
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US2228080A
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US2226561A
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US2287280A
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US2235817A
Cited
US2342492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-01 | 1951-03-03 | 1951-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-01 | 1955-03-03 | 1955-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-01 | 1959-03-03 | 1959-09-02 | $7700.00 | Window Closed / Lapsed |