Patent US3035489A successfully refreshed from Google Patents.
US3035489A
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US
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Method and means for controlling brightness and depth of focused images
Assignee: American National Bank and Trust Company of Chicago
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Filing: 1958-04-16
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Granted: 1962-05-22
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Expires: 1978-04-16
Abstract
No abstract record available.
Inventors
- 👤 Raymond S Simons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:30
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/0025; G02B13/00; G02B5/00; G02B5/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1154232A
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US1784425A
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US1813439A
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US1993448A
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US2193325A
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US2812686A
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US2838683A
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US2915939A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |