US3132211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dial light for telephone substation set
Assignee: North Electric Co
•
Filing: 1960-06-13
•
Granted: 1964-05-05
•
Expires: 1980-06-13
Abstract
No abstract record available.
Inventors
- 👤 Edward E Bauman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:50
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN A POWER SUPPLY CIRCUIT ADAPTED TO BE COUPLED TO THE VOICE COMMUNICATION LINES EXTENDING FROM AN EXCHANGE TO A SUBSCRIBER SUBSTATION SET IN A TELEPHONE SYSTEM TO PROVIDE AN ALTERNATING CURRENT SIGNAL OUTPUT TO AN ELECTROLUMINESCENT CELL FOR SAID SUBSCRIBER SUBSTATION SET COMPRISING INPUT MEANS FOR COUPLING THE POWER SUPPLY CIRCUIT TO SAID VOICE COMMUNICATION LINES, AN INVERTER CIRCUIT COUPLED TO SAID INPUT MEANS INCLUDING OSCILLATOR MEANS OPERATIVE RESPONSIVE TO THE LOW VOLTAGE, DIRECT-CURRENT POWER ON SAID VOICE COMMUNICATION LINES TO GENERATE ALTERNATING CURRENT OUTPUT SIGNALS OF A VALUE TO ENERGIZE SAID ELECTROLUMINESCENT CELL, AND OUTPUT MEANS FOR COUPLING SAID ALTERNATING CURRENT SIGNALS TO SAID ELECTROLUMINESCENT CELL.
Claim 2
Dependent Claim
108 words
IN A POWER SUPPLY CIRCUIT ADAPTED TO BE COUPLED TO THE VOICE COMMUNICATION LINES EXTENDING FROM AN EXCHANGE TO A SUBSCRIBER SUBSTATION SET IN A TELEPHONE SYSTEM TO PROVIDE AN ALTERNATING CURRENT SIGNAL OUTPUT TO AN ELECTROLUMINESCENT CELL FOR SAID SUBSCRIBER SUBSTATION SET COMPRISING INPUT MEANS FOR COUPLING THE POWER SUPPLY CIRCUIT TO SAID VOICE COMMUNICATION LINES, AN INVERTER CIRCUIT COUPLED TO SAID INPUT MEANS INCLUDING OSCILLATOR MEANS OPERATIVE RESPONSIVE TO THE LOW VOLTAGE, DIRECT-CURRENT POWER ON SAID VOICE COMMUNICATION LINES TO GENERATE ALTERNATING CURRENT OUTPUT SIGNALS OF A VALUE TO ENERGIZE SAID ELECTROLUMINESCENT CELL, AND OUTPUT MEANS FOR COUPLING SAID ALTERNATING CURRENT SIGNALS TO SAID ELECTROLUMINESCENT CELL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |