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US3450883A
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Automatic focusing apparatus
Assignee: Conductron Corp
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Filing: 1965-02-03
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Granted: 1969-06-17
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Expires: 1985-02-03
Abstract
No abstract record available.
Inventors
- 👤 Carlton E Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:42
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/28; G02B7/30; G02B7/32; G03; G03B; G03B21/00; G03B21/14; G03B21/53
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2831057A
Cited
US3274913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |