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US3218871A
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US
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Angular rotation detection system utilizing the displacement of electron beam
Assignee: Individual
•
Filing: 1961-11-17
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Granted: 1965-11-23
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Expires: 1981-11-17
Abstract
No abstract record available.
Inventors
- 👤 Dressler Robert
- 👤 Halberstam Mendel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:42
CPC Classifications
B; B64; B64G; B64G1/00; B64G1/22; B64G1/24; B64G1/36; G; G01; G01C; G01C19/00; G21; G21H; G21H5/00; H; H01; H01J; H01J29/00; H01J37/00; H01J37/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3102953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |