US2648795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visual electron flow indicator
Assignee: LEE ELECTRONIC LABS Inc
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Filing: 1951-08-09
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Granted: 1953-08-11
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Expires: 1971-08-09
Abstract
No abstract record available.
Inventors
- 👤 Leon S Maloof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:53
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/24; G01R31/25; H; H01; H01J; H01J21/00; H01J9/00; H01J9/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1994733A
Cited
US1994726A
Cited
US2304186A
Cited
US2594025A
Cited
US2594026A
Cited
US2564737A
Cited
US2565533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |