US3206728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Identification signalling system utilizing a transponder
Assignee: Siemens and Halske AG
•
Filing: 1961-04-24
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Granted: 1965-09-14
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Expires: 1981-04-24
Abstract
No abstract record available.
Inventors
- 👤 Baumgart Siegfried
- 👤 Meyer Hans Ulrich
- 👤 Luers Wilbrand
- 👤 Beyersdorff Rolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:04
CPC Classifications
B; B61; B61L; B61L25/00; B61L25/02; B61L25/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A SIGNALLING SYSTEM FOR IDENTIFYING A VEHICLE COMPRISING IN COMBINATION, A TRANSPONDER UNIT CARRIED BY SAID VEHICLE OPERABLE TO TRANSMIT AT LEAST ONE IDENTIFICATION SIGNAL UPON RECEIVING A TRANSMITTED INTERROGATION SIGNAL AT A PREDETERMINED FREQUENCY; SAID TRANSPONDER UNIT INCLUDING A PLURALITY OF PARALLEL RESONANT CIRCUITS, A PLURALITY OF MULTI-APERTURE MAGNETIC CORES EACH HAVING AN INNER YOKE AND AN OUTER YOKE INDEPENDENTLY MAGNETIZABLE IN FIRST AND SECOND DIRECTIONS, CIRCUIT MEANS LINKING EACH OF SAID PARALLEL RESONANT CIRCUITS WITH ONE OF SAID APER-
Claim 2
Dependent Claim
81 words
A SIGNALLING SYSTEM FOR IDENTIFYING A VEHICLE COMPRISING IN COMBINATION, A TRANSPONDER UNIT CARRIED BY SAID VEHICLE OPERABLE TO TRANSMIT AT LEAST ONE IDENTIFICATION SIGNAL UPON RECEIVING A TRANSMITTED INTERROGATION SIGNAL AT A PREDETERMINED FREQUENCY; SAID TRANSPONDER UNIT INCLUDING A PLURALITY OF PARALLEL RESONANT CIRCUITS, A PLURALITY OF MULTI-APERTURE MAGNETIC CORES EACH HAVING AN INNER YOKE AND AN OUTER YOKE INDEPENDENTLY MAGNETIZABLE IN FIRST AND SECOND DIRECTIONS, CIRCUIT MEANS LINKING EACH OF SAID PARALLEL RESONANT CIRCUITS WITH ONE OF SAID APER-
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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) | 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 |