US3150237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone line clearing relay
Assignee: Individual
•
Filing: 1961-02-21
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Granted: 1964-09-22
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Expires: 1981-02-21
Abstract
No abstract record available.
Inventors
- 👤 Frank C Baldik
- 👤 Straszewski Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:11
CPC Classifications
H; H04; H04Q; H04Q5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A TELEPHONE LINE CLEARING SYSTEM COMPRISING IN COMBINATION WITH A TELEPHONE RECEIVING CIRCUIT HAVING A HANDPIECE ACTUATED HOOK SWITCH, NORMALLY CLOSED LINE CLEARING CIRCUIT MEANS OPERATIVELY RESPONSIVE THROUGH THE HOOK SWITCH TO CLOSE THE TELEPHONE RECEIVING CIRCUIT, MEANS INSTANTANEOUSLY RESPONSIVE TO A LINE CLEARING SIGNAL TO OPEN THE LINE CLEARING CIRCUIT MEANS FOR THE DISCONNECTING OF THE TELEPHONE RECEIVING CIRCUIT AND DELAYED RESTORATION THEREOF TO A CLOSED CONDITION, LATCH MEANS RELEASABLE BY SAID HOOK SWITCH FOR HOLDING THE LINE CLEARING CIRCUIT OPEN PRIOR TO RESTORATION TO SAID CLOSED CONDITION AND SELECTIVELY ACTUATED RESET MEANS RENDERED OPERATIVE UPON RELEASE OF SAID LATCH MEANS AND FOLLOWING RECEPTION OF SAID LINE CLEARING SIGNAL TO RESTORE THE LINE CLEARING CIRCUIT MEANS TO A CLOSED CONDITION INDEPENDENTLY OF THE HOOK SWITCH.
Claim 2
Dependent Claim
126 words
A TELEPHONE LINE CLEARING SYSTEM COMPRISING IN COMBINATION WITH A TELEPHONE RECEIVING CIRCUIT HAVING A HANDPIECE ACTUATED HOOK SWITCH, NORMALLY CLOSED LINE CLEARING CIRCUIT MEANS OPERATIVELY RESPONSIVE THROUGH THE HOOK SWITCH TO CLOSE THE TELEPHONE RECEIVING CIRCUIT, MEANS INSTANTANEOUSLY RESPONSIVE TO A LINE CLEARING SIGNAL TO OPEN THE LINE CLEARING CIRCUIT MEANS FOR THE DISCONNECTING OF THE TELEPHONE RECEIVING CIRCUIT AND DELAYED RESTORATION THEREOF TO A CLOSED CONDITION, LATCH MEANS RELEASABLE BY SAID HOOK SWITCH FOR HOLDING THE LINE CLEARING CIRCUIT OPEN PRIOR TO RESTORATION TO SAID CLOSED CONDITION AND SELECTIVELY ACTUATED RESET MEANS RENDERED OPERATIVE UPON RELEASE OF SAID LATCH MEANS AND FOLLOWING RECEPTION OF SAID LINE CLEARING SIGNAL TO RESTORE THE LINE CLEARING CIRCUIT MEANS TO A CLOSED CONDITION INDEPENDENTLY OF THE HOOK SWITCH.
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |