Patent US3206746A successfully refreshed from Google Patents.
US3206746A
Expired / Lapsed
US
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Signalling system
Assignee: Siemens and Halske AG
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Filing: 1962-01-25
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Granted: 1965-09-14
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Expires: 1982-01-25
Abstract
No abstract record available.
Inventors
- 👤 Beyersdorf Rolf
- 👤 Meyer Hans-Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:10
CPC Classifications
B; B61; B61L; B61L25/00; B61L25/02; B61L25/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
AN IDENTIFICATION SYSTEM COMPRISING AN INTERROGATOR UNIT AND A RESPONDER UNIT RELATIVE MOVABLE WITH RESPECT TO EACH OTHER, SAID INTERROGATOR UNIT INCLUDING A TRANSMITTING MEANS AND A RECEIVING MEANS, SAID TRANSMITTING MEANS OPERABLE TO GENERATE AN INTERROGATION SIGNAL HAVING A CARRIER FREQUENCY AND A PLURALITY OF FREQUENCIES OF A FIRST SIDEBAND AND SAID RECEIVING MEANS OPERABLE TO RECEIVE A PLURALITY OF FREQUENCIES OF A SECOND SIDEBAND OF SAID CARRIER FREQUENCY, SAID RESPONDER UNIT INCLUDING MEANS FOR GENERATING RESPONSE SIGNALS HAVING FREQUENCIES OF SAID SECND SIDEBAND IN RESPONSE TO EACH OF SAID PLURALITY OF FREQUENCIES OF SAID FIRST SIDEBAND OF SAID INTERROGATION SIGNAL, SAID FIRST AND SECOND SIDEBANDS BEING MUTUALLY INDEPENDENT ONE TO ANTHER SIDEBAND.
Claim 2
Dependent Claim
114 words
AN IDENTIFICATION SYSTEM COMPRISING AN INTERROGATOR UNIT AND A RESPONDER UNIT RELATIVE MOVABLE WITH RESPECT TO EACH OTHER, SAID INTERROGATOR UNIT INCLUDING A TRANSMITTING MEANS AND A RECEIVING MEANS, SAID TRANSMITTING MEANS OPERABLE TO GENERATE AN INTERROGATION SIGNAL HAVING A CARRIER FREQUENCY AND A PLURALITY OF FREQUENCIES OF A FIRST SIDEBAND AND SAID RECEIVING MEANS OPERABLE TO RECEIVE A PLURALITY OF FREQUENCIES OF A SECOND SIDEBAND OF SAID CARRIER FREQUENCY, SAID RESPONDER UNIT INCLUDING MEANS FOR GENERATING RESPONSE SIGNALS HAVING FREQUENCIES OF SAID SECND SIDEBAND IN RESPONSE TO EACH OF SAID PLURALITY OF FREQUENCIES OF SAID FIRST SIDEBAND OF SAID INTERROGATION SIGNAL, SAID FIRST AND SECOND SIDEBANDS BEING MUTUALLY INDEPENDENT ONE TO ANTHER SIDEBAND.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |