Patent US3271576A successfully refreshed from Google Patents.
US3271576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric matrix network
Assignee: Western Union Telegraph Co
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Filing: 1963-01-29
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Granted: 1966-09-06
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Expires: 1983-01-29
Abstract
No abstract record available.
Inventors
- 👤 Frank T Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:08
CPC Classifications
G; G06; G06V; G06V30/00; G06V30/10; G06V30/19; G06V30/192; G06V30/195
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A NETWORK COMPRISING A PLURALITY OF LIGHT SENSITIVE MEANS EACH HAVING AN IMPEDANCE WHICH VARIES SUBSTANTIALLY LINEARLY WITH CHANGES IN LIGHT INTENSITIES ARRANGED TO FORM A MATRIX EACH HAVING A FIRST TERMINAL AND A SECOND TERMINAL, A SOURCE OF POSITIVE POTENTIAL COUPLED TO THE FIRST TERMINAL OF EACH LIGHT SENSITIVE MEANS, A SOURCE OF NEGATIVE POTENTIAL COUPLED TO THE SECOND TERMINAL OF EACH LIGHT SENSITIVE MEANS, A FIRST IMPEDANCE INTERPOSED BETWEEN SAID SOURCE OF POSITIVE POTENTIAL AND THE FIRST TERMINAL OF EACH LIGHT SENSITIVE MEANS, A SECOND IMPEDANCE INTERPOSED BETWEEN SAID SOURCE OF NEGATIVE POTENTIAL AND THE SECOND TERMINAL OF EACH LIGHT SENSITIVE MEANS, A FIRST GROUP OF RESISTORS COUPLED TO PREDETERMINED FIRST TERMINALS, A SECOND GROUP OF RESISTORS COUPLED TO PREDETERMINED SECOND TERMINALS, OUTPUT MEANS FED BY SAID FIRST AND SECOND GROUPS OF RESISTORS, AND BIAS MEANS COUPLED TO SAID OUTPUT MEANS.
Claim 2
Dependent Claim
143 words
A NETWORK COMPRISING A PLURALITY OF LIGHT SENSITIVE MEANS EACH HAVING AN IMPEDANCE WHICH VARIES SUBSTANTIALLY LINEARLY WITH CHANGES IN LIGHT INTENSITIES ARRANGED TO FORM A MATRIX EACH HAVING A FIRST TERMINAL AND A SECOND TERMINAL, A SOURCE OF POSITIVE POTENTIAL COUPLED TO THE FIRST TERMINAL OF EACH LIGHT SENSITIVE MEANS, A SOURCE OF NEGATIVE POTENTIAL COUPLED TO THE SECOND TERMINAL OF EACH LIGHT SENSITIVE MEANS, A FIRST IMPEDANCE INTERPOSED BETWEEN SAID SOURCE OF POSITIVE POTENTIAL AND THE FIRST TERMINAL OF EACH LIGHT SENSITIVE MEANS, A SECOND IMPEDANCE INTERPOSED BETWEEN SAID SOURCE OF NEGATIVE POTENTIAL AND THE SECOND TERMINAL OF EACH LIGHT SENSITIVE MEANS, A FIRST GROUP OF RESISTORS COUPLED TO PREDETERMINED FIRST TERMINALS, A SECOND GROUP OF RESISTORS COUPLED TO PREDETERMINED SECOND TERMINALS, OUTPUT MEANS FED BY SAID FIRST AND SECOND GROUPS OF RESISTORS, AND BIAS MEANS COUPLED TO SAID OUTPUT MEANS.
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |