US3172108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of navigation
Assignee: Individual
•
Filing: 1964-06-29
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Granted: 1965-03-02
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Frank T Mcclure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:11
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/02; G01S11/10; G01S19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A NAVIGATION SYSTEM, COMPRISING, AN ARTIFICIAL EARTH SATELLITE TRAVELLING IN AN ORBIT OF KNOWN PARAMETERS, A RADIO TRANSMITTER LOCATED ABOARD SAID SATELLITE FOR BROADCASTING DOPPLER SIGNALS, MEANS AT AN UNKNOWN LOCATION FOR RECEIVING AT PREDETERMINED TIMES SAID DOPPLER SIGNALS, A COMPUTING DEVICE AT SAID UNKNOWN LOCATION, AND MEANS FOR INSERTING INTO SAID COMPUTING DEVICE SAID DOPPLER SIGNALS, SAID ORBITAL PARAMETERS AND THE TIME OF RECEPTION OF SAID SIGNALS, FIG-01 SAID COMPUTING DEVICE BEING PROGRAMMED TO COMPUTE THE GEOGRAPHIC COORDINATES OF THE UNKNOWN LOCATION BY AN ANALYSIS OF SAID RECEIVED DOPPLER SIGNALS, THE ORBITAL PARAMETERS OF THE SATELLITE AND THE TIME OF RECEPTION OF SAID DOPPLER SIGNALS.
Claim 2
Dependent Claim
106 words
A NAVIGATION SYSTEM, COMPRISING, AN ARTIFICIAL EARTH SATELLITE TRAVELLING IN AN ORBIT OF KNOWN PARAMETERS, A RADIO TRANSMITTER LOCATED ABOARD SAID SATELLITE FOR BROADCASTING DOPPLER SIGNALS, MEANS AT AN UNKNOWN LOCATION FOR RECEIVING AT PREDETERMINED TIMES SAID DOPPLER SIGNALS, A COMPUTING DEVICE AT SAID UNKNOWN LOCATION, AND MEANS FOR INSERTING INTO SAID COMPUTING DEVICE SAID DOPPLER SIGNALS, SAID ORBITAL PARAMETERS AND THE TIME OF RECEPTION OF SAID SIGNALS, FIG-01 SAID COMPUTING DEVICE BEING PROGRAMMED TO COMPUTE THE GEOGRAPHIC COORDINATES OF THE UNKNOWN LOCATION BY AN ANALYSIS OF SAID RECEIVED DOPPLER SIGNALS, THE ORBITAL PARAMETERS OF THE SATELLITE AND THE TIME OF RECEPTION OF SAID DOPPLER SIGNALS.
References Cited (Backward Citations)
US3141167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |