US3258601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive variable resistance device
Assignee: —
•
Filing: —
•
Granted: 1966-06-28
•
Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A VARIABLE RESISTANCE DEVICE COMPRISING: A FIRST PAIR OF CONDUCTORS SPACED ALONG THEIR LENGTH; AT LEAST ONE ADDITIONAL CONDUCTOR POSITIONED BETWEEN SAID FIRST PAIR OF CONDUCTORS SO THAT THE SPACING BETWEEN SAID THIRD CONDUCTOR AND SAID FIRST PAIR OF CONDUCTORS VARIES OVER THE LENGTH OF SAID THIRD CONDUCTOR; A PHOTOSENSITIVE LAYER, WHOSE ELECTRICAL RESISTANCE IS DEPENDENT UPON THE ILLUMINATION OF SAID LAYER, IN CONTACT WITH EACH OF SAID CONDUCTORS AND EXTENDING BETWEEN THEM; AND MEANS FOR ILLUMINATING A VARIABLE PORTION OF SAID LAYER, WHICH PORTION ALWAYS INCLUDES POINTS AT WHICH SAID LAYER CONTACTS EACH OF SAID CONDUCTORS;
Claim 2
Dependent Claim
97 words
A VARIABLE RESISTANCE DEVICE COMPRISING: A FIRST PAIR OF CONDUCTORS SPACED ALONG THEIR LENGTH; AT LEAST ONE ADDITIONAL CONDUCTOR POSITIONED BETWEEN SAID FIRST PAIR OF CONDUCTORS SO THAT THE SPACING BETWEEN SAID THIRD CONDUCTOR AND SAID FIRST PAIR OF CONDUCTORS VARIES OVER THE LENGTH OF SAID THIRD CONDUCTOR; A PHOTOSENSITIVE LAYER, WHOSE ELECTRICAL RESISTANCE IS DEPENDENT UPON THE ILLUMINATION OF SAID LAYER, IN CONTACT WITH EACH OF SAID CONDUCTORS AND EXTENDING BETWEEN THEM; AND MEANS FOR ILLUMINATING A VARIABLE PORTION OF SAID LAYER, WHICH PORTION ALWAYS INCLUDES POINTS AT WHICH SAID LAYER CONTACTS EACH OF SAID CONDUCTORS;
References Cited (Backward Citations)
US1514123A
Cited
US2556991A
Cited
US2509705A
Cited
US2548783A
Cited
US2706791A
Cited
US2907934A
Cited
US2967945A
Cited
US3102227A
Cited
US2945959A
Cited
US2896086A
Cited
US3033073A
Cited
US3087069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |