US3144648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual mode spiral antenna
Assignee: ADVANCED DEV LAB Inc
•
Filing: 1962-09-28
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Granted: 1964-08-11
•
Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 Dollinger Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:00
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/26; H01Q9/27; G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/422
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A WAVE TRANSLATION DEVICE, COMPRISING: A PAIR OF INVOLUTE CIRCULAR, WAVE TRANSLATION ELEMENTS; SYNCHRONOUS MEANS COUPLED TO SAID ELEMENTS FOR COUPLING SAID ELEMENTS AND A PAIR OF SIGNALS IN SYNCHRONOUS PHASE RELATION; ANTI-SYNCHRONOUS MEANS COUPLED TO SAID ELEMENTS FOR COUPLING SAID ELEMENTS AND A PAIR OF SIGNALS IN 180* PHASE RELATION; AND VARIABLE MEANS COUPLED TO SAID ELEMENTS FOR VARYING A SELECTED CHARACTERISTIC OF ONE SAID PAIR OF SIGNALS RELATIVE TO THE OTHER SAID PAIR OF SIGNALS.
Claim 2
Dependent Claim
77 words
A WAVE TRANSLATION DEVICE, COMPRISING: A PAIR OF INVOLUTE CIRCULAR, WAVE TRANSLATION ELEMENTS; SYNCHRONOUS MEANS COUPLED TO SAID ELEMENTS FOR COUPLING SAID ELEMENTS AND A PAIR OF SIGNALS IN SYNCHRONOUS PHASE RELATION; ANTI-SYNCHRONOUS MEANS COUPLED TO SAID ELEMENTS FOR COUPLING SAID ELEMENTS AND A PAIR OF SIGNALS IN 180* PHASE RELATION; AND VARIABLE MEANS COUPLED TO SAID ELEMENTS FOR VARYING A SELECTED CHARACTERISTIC OF ONE SAID PAIR OF SIGNALS RELATIVE TO THE OTHER SAID PAIR OF SIGNALS.
References Cited (Backward Citations)
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Cited
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Cited
US2988739A
Cited
US3055003A
Cited
US2990548A
Cited
US3013265A
Cited
US3089136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |