US3243526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone dial tester
Assignee: Seismograph Service Corp
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Filing: 1962-05-04
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Granted: 1966-03-29
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Expires: 1982-05-04
Abstract
No abstract record available.
Inventors
- 👤 Barge Louis P La
- 👤 Irving A Shedd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:11
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A TELEPHONE DIAL TESTER WHICH COMPRISES PULSE GENERATOR MEANS FOR PRODUCING ELECTRICAL PULSES AT A PREDETERMINED FREQUENCY, A COUNTER UNIT CONNECTED TO SAID PULSE GENERATOR MEANS AND ADAPTED TO COUNT THE NUMBER OF PULSES IT RECEIVES FROM THE PULSE GENERATOR MEANS, SAID COUNTER UNIT INCLUDING MEANS VISUALLY INDICATING THE NUMBER OF PULSES RECEIVED BY THE COUNTER UNIT FROM THE PULSE GENERATOR MEANS, ELECTRONIC GATE CIRCUIT MEANS CONNECTED TO SAID PULSE GENERATOR MEANS AND CONTROLLABLE BETWEEN A CLOSED CONDITION IN WHICH PULSES FROM THE PULSE GENERATOR MEANS ARE NOT FED TO THE COUNTER UNIT AND AN OPEN CONDITION IN WHICH PULSES ARE FED FROM THE PULSE GENERATOR MEANS TO THE COUNTER UNIT, AND CONTROL CIRCUIT MEANS CONNECTED TO THE GATE CIRCUIT MEANS AND CONNECTABLE TO CONTACTS OF A TELEPHONE DIAL, SAID CONTROL CIRCUIT MEANS CAUSING SAID GATE CIRCUIT MEANS TO SHIFT FROM ITS CLOSED CONDITION TO ITS OPEN CONDITION AND BACK TO ITS CLOSED CONDITION IN RESPONSE TO MOVEMENT OF THE TELEPHONE DIAL CONTACTS.
Claim 2
Dependent Claim
163 words
A TELEPHONE DIAL TESTER WHICH COMPRISES PULSE GENERATOR MEANS FOR PRODUCING ELECTRICAL PULSES AT A PREDETERMINED FREQUENCY, A COUNTER UNIT CONNECTED TO SAID PULSE GENERATOR MEANS AND ADAPTED TO COUNT THE NUMBER OF PULSES IT RECEIVES FROM THE PULSE GENERATOR MEANS, SAID COUNTER UNIT INCLUDING MEANS VISUALLY INDICATING THE NUMBER OF PULSES RECEIVED BY THE COUNTER UNIT FROM THE PULSE GENERATOR MEANS, ELECTRONIC GATE CIRCUIT MEANS CONNECTED TO SAID PULSE GENERATOR MEANS AND CONTROLLABLE BETWEEN A CLOSED CONDITION IN WHICH PULSES FROM THE PULSE GENERATOR MEANS ARE NOT FED TO THE COUNTER UNIT AND AN OPEN CONDITION IN WHICH PULSES ARE FED FROM THE PULSE GENERATOR MEANS TO THE COUNTER UNIT, AND CONTROL CIRCUIT MEANS CONNECTED TO THE GATE CIRCUIT MEANS AND CONNECTABLE TO CONTACTS OF A TELEPHONE DIAL, SAID CONTROL CIRCUIT MEANS CAUSING SAID GATE CIRCUIT MEANS TO SHIFT FROM ITS CLOSED CONDITION TO ITS OPEN CONDITION AND BACK TO ITS CLOSED CONDITION IN RESPONSE TO MOVEMENT OF THE TELEPHONE DIAL CONTACTS.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |