Patent US2525020A successfully refreshed from Google Patents.
US3328565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Navigation and position plotting system
Assignee: Telefunken Patentverwertungs GmbH
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Filing: 1963-04-05
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Granted: 1967-06-27
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Expires: 1983-04-05
Abstract
No abstract record available.
Inventors
- 👤 Prichodjko Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:32
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/20; G01S1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A SYSTEM OF THE CHARACTER DESCRIBED COMPRISING, IN COMBINATION: MEANS LOCATED AT A FIRST KNOWN POINT E1 FOR TRANSMITTING A REFERENCE TIME MARKER SIGNAL S10 AT AN INSTANT T0; MEANS LOCATED AT AN UNKNOWN POINT P FOR RECEIVING SID SIGNAL S10, AT AN INSTANT T1 AND FOR THEREUPON TRANSMITTING AN INFORMATIONAL TIME MARKER SIGNAL S10'', MEANS LOCATED AT ANOTHER KNOWN POINT E2 FOR RECEIVING SAID INFORMATIONAL TIME MARKER SIGNAL S10'' AT AN INSTANT T2''; MEANS LOCATED AT SAID FIRST POINT FOR RECEIVING SAID INFORMATIONAL TIME MARKER SIGNAL S10'' AT AN INSTANT T1''; AND, ASSOCIATED WITH AT LEAST ONE OF SAID KNOWN POINTS, MEANS FOR DETERMINING THE TIME DIFFERENCE $T12 BETWEEN SAID INSTANTS, T1'' AND T2'', MEANS FOR DETERMINING
Claim 2
Independent Claim
118 words
A SYSTEM OF THE CHARACTER DESCRIBED COMPRISING, IN COMBINATION: MEANS LOCATED AT A FIRST KNOWN POINT E1 FOR TRANSMITTING A REFERENCE TIME MARKER SIGNAL S10 AT AN INSTANT T0; MEANS LOCATED AT AN UNKNOWN POINT P FOR RECEIVING SID SIGNAL S10, AT AN INSTANT T1 AND FOR THEREUPON TRANSMITTING AN INFORMATIONAL TIME MARKER SIGNAL S10'', MEANS LOCATED AT ANOTHER KNOWN POINT E2 FOR RECEIVING SAID INFORMATIONAL TIME MARKER SIGNAL S10'' AT AN INSTANT T2''; MEANS LOCATED AT SAID FIRST POINT FOR RECEIVING SAID INFORMATIONAL TIME MARKER SIGNAL S10'' AT AN INSTANT T1''; AND, ASSOCIATED WITH AT LEAST ONE OF SAID KNOWN POINTS, MEANS FOR DETERMINING THE TIME DIFFERENCE $T12 BETWEEN SAID INSTANTS, T1'' AND T2'', MEANS FOR DETERMINING
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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |