US3396281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflective photoelectric pickups
Assignee: Eastman Kodak Co
•
Filing: 1965-08-12
•
Granted: 1968-08-06
•
Expires: 1985-08-12
Abstract
No abstract record available.
Inventors
- 👤 Robert J Blackman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:36
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10841
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
A DEVICE FOR INCREASING THE SENSITIVITY OF A PHOTOELECTRIC PICKUP COMPRISING, A BLOCK OF LIGHT TRANSMITTING MATERIAL HAVING AN OPEING THEREIN THROUGH WHICH LIGHT MAY PASS, ONE END OF SAID OPENING BEING LARGER THAN THE OTHER END AND AT LEAST PART OF THE SURFACE OF SAID BLOCK ON THE INSIDE OF SAID OPENING BEING LIGHT DIFFUSING AND TRANSMITTING.
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) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |