Patent US3294922A successfully refreshed from Google Patents.
US3294922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operator position equipment for telephone systems
Assignee: AT&T Inc
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Filing: 1963-09-13
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Granted: 1966-12-27
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Expires: 1983-09-13
Abstract
No abstract record available.
Inventors
- 👤 Edward W Schneider
- 👤 Max S Schoeffler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:19
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A TELEPHONE SYSTEM AN ATTENDANT POSITION INCLUDING A HEADSET HAVING A FIRST AND A SECOND RECEIVER AND A TRANSMITTER, FIRST AND SECOND COMMUNICATION CHANNELS, FIRST MEANS FOR CONNECTING ONE OF SAID RECEIVERS AND SAID TRANSMITTER TO ONLY ONE OF SAID CHANNELS, SECOND MEANS DISTINCT FROM SAID FIRST MEANS FOR CONNECTING SAID RECEIVER SIMULTANEOUSLY TO INDIVIDUAL ONES OF SAID CHANNELS, AND CONTROL MEANS FOR ESTABLISHING ONE OF SAID FIRST AND SECOND MEANS.
Claim 2
Dependent Claim
72 words
IN A TELEPHONE SYSTEM AN ATTENDANT POSITION INCLUDING A HEADSET HAVING A FIRST AND A SECOND RECEIVER AND A TRANSMITTER, FIRST AND SECOND COMMUNICATION CHANNELS, FIRST MEANS FOR CONNECTING ONE OF SAID RECEIVERS AND SAID TRANSMITTER TO ONLY ONE OF SAID CHANNELS, SECOND MEANS DISTINCT FROM SAID FIRST MEANS FOR CONNECTING SAID RECEIVER SIMULTANEOUSLY TO INDIVIDUAL ONES OF SAID CHANNELS, AND CONTROL MEANS FOR ESTABLISHING ONE OF SAID FIRST AND SECOND MEANS.
References Cited (Backward Citations)
US1996213A
Cited
US2294237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |