Patent US3479513A successfully refreshed from Google Patents.
US3479513A
Expired / Lapsed
US
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Pattern follower confining fields of view of two scanning photocells within conical surfaces overlapping at pattern
Assignee: Westinghouse Canada Inc
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Filing: 1965-10-19
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Granted: 1969-11-18
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Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 Robert G Simpson
- 👤 Ronald J Luker
- 👤 George S Jewell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:53
CPC Classifications
G; G06; G06K; G06K11/00; G06K11/02; B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12; B23Q35/127; B23Q35/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |