US2647174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable beam-trace-positioning amplifier
Assignee: Allen B du Mont Laboratories Inc
•
Filing: 1950-09-23
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Granted: 1953-07-28
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Expires: 1970-09-23
Abstract
No abstract record available.
Inventors
- 👤 Maron Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:36
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2240635A
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US2208254A
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US2310342A
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US2329073A
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GB584191A
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US2471449A
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US2529459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |