US3446971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical ranging system using a beat frequency responsive photomultiplier
Assignee: Newport Corp USA
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Filing: 1966-05-31
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Granted: 1969-05-27
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Expires: 1986-05-31
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Ruddock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:18
CPC Classifications
G; G01; G01S; G01S17/00; G01S17/02; G01S17/06; G01S17/08; G01S17/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2206072A
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US2768309A
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US2929949A
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US2982167A
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US3237011A
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US3328583A
Cited
US3339457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |