US3341665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interrupter circuit for telephone systems
Assignee: Lorain Products Corp
•
Filing: 1964-03-23
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Granted: 1967-09-12
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Expires: 1984-03-23
Abstract
No abstract record available.
Inventors
- 👤 Stephen L Merkel
- 👤 Jefferson T Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:11
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/70; H04; H04M; H04M19/00; H04M19/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A CIRCUIT ADAPTED TO CONDUCTED CURRENT BETWEEN AN A-C POWER SOURCE AND A LOAD, IN COMBINATION, PULSE GENERATING MEANS, LIGHT SOURCE MEANS ARRANGED TO TURN OFF AND ON IN RESPONSE TO A PREDETERMINED CHANGE OF CONDITIONS IN SAID PULSE GENERATING MEANS, LIGHT SENSITIVE SWITCH MEANS, MEANS FOR CONNECTING SAID LIGHT SENSITIVE SWITCH MEANS BETWEEN THE A-C SOURCE AND LOAD, A NETWORK FOR SAID LIGHT SENSITIVE MEANS ARRANGED TO BE ENERGIZED DURING BOTH HALF CYCLES OF AN A-C CYCLE FROM THE A-C SOURCE BY A CHANGE IN ELECTRICAL CHARACTERISTICS IN SAID LIGHT SENSITIVE SWITCH MEANS RESPONSIVE TO CHANGE OF LIGHT INTENSITY FROM SAID LIGHT SOURCE IN ACCORDANCE WITH A PREDETERMINED CHANGE OF CONDITIONS IN SAID PULSE GENERATOR MEANS.
Claim 2
Dependent Claim
118 words
IN A CIRCUIT ADAPTED TO CONDUCTED CURRENT BETWEEN AN A-C POWER SOURCE AND A LOAD, IN COMBINATION, PULSE GENERATING MEANS, LIGHT SOURCE MEANS ARRANGED TO TURN OFF AND ON IN RESPONSE TO A PREDETERMINED CHANGE OF CONDITIONS IN SAID PULSE GENERATING MEANS, LIGHT SENSITIVE SWITCH MEANS, MEANS FOR CONNECTING SAID LIGHT SENSITIVE SWITCH MEANS BETWEEN THE A-C SOURCE AND LOAD, A NETWORK FOR SAID LIGHT SENSITIVE MEANS ARRANGED TO BE ENERGIZED DURING BOTH HALF CYCLES OF AN A-C CYCLE FROM THE A-C SOURCE BY A CHANGE IN ELECTRICAL CHARACTERISTICS IN SAID LIGHT SENSITIVE SWITCH MEANS RESPONSIVE TO CHANGE OF LIGHT INTENSITY FROM SAID LIGHT SOURCE IN ACCORDANCE WITH A PREDETERMINED CHANGE OF CONDITIONS IN SAID PULSE GENERATOR MEANS.
References Cited (Backward Citations)
US3192323A
Cited
US3235669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |