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Patent US3168659A successfully refreshed from Google Patents.
US3168659A
Expired / Lapsed
US
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Variable focus transducer
Assignee: Motors Liquidation Co
•
Filing: 1960-01-11
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Granted: 1965-02-02
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Expires: 1980-01-11
Abstract
No abstract record available.
Inventors
- 👤 Willard W Bayre
- 👤 Norman W Schubring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:16
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA494971A
Cited
US1624412A
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US1563626A
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US2398815A
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US2398117A
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US2452068A
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US2532507A
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US2561368A
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US2545101A
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US2715189A
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US2913602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |