US3141167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Navigation system
Assignee: TDK Micronas GmbH
•
Filing: 1959-12-07
•
Granted: 1964-07-14
•
Expires: 1979-12-07
Abstract
No abstract record available.
Inventors
- 👤 Peter C Sandretto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:06
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/02; G01S11/10; G01S19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A NAVIGATION SYSTEM FOR DETERMINING THE POSITION OF A VEHICLE RELATIVE A SOURCE OF ELECTROMAGNETIC RADIATIONS MOVING ALONG A KNOWN PATH SPACED APART FROM THE EARTH AND AT A KNOWN VELOCITY; COMPRISING A RECEIVER CARRIED BY SAID VEHICLE FOR RECEIVING SIGNALS INCLUDING SAID RADIATIONS, MEANS TO DETECT FROM SAID RECEIVED RADIATIONS THE DOPPLER MODULATIONS PRODUCED BY THE MOVEMENT OF SAID SOURCE RELATIVE SAID VEHICLE, A FREQUENCY COUNTER COUPLED TO SAID DETECTING MEANS TO DETERMINE THE FREQUENCIES OF SAID DOPPLER MODULATIONS AND RECORDING MEANS COUPLED TO THE OUTPUT OF SAID FREQUENCY COUNTER WHEREBY SAID DOPPLER FREQUENCIES ARE RECORDED AS A FUNCTION OF TIME AND
Claim 2
Dependent Claim
104 words
IN A NAVIGATION SYSTEM FOR DETERMINING THE POSITION OF A VEHICLE RELATIVE A SOURCE OF ELECTROMAGNETIC RADIATIONS MOVING ALONG A KNOWN PATH SPACED APART FROM THE EARTH AND AT A KNOWN VELOCITY; COMPRISING A RECEIVER CARRIED BY SAID VEHICLE FOR RECEIVING SIGNALS INCLUDING SAID RADIATIONS, MEANS TO DETECT FROM SAID RECEIVED RADIATIONS THE DOPPLER MODULATIONS PRODUCED BY THE MOVEMENT OF SAID SOURCE RELATIVE SAID VEHICLE, A FREQUENCY COUNTER COUPLED TO SAID DETECTING MEANS TO DETERMINE THE FREQUENCIES OF SAID DOPPLER MODULATIONS AND RECORDING MEANS COUPLED TO THE OUTPUT OF SAID FREQUENCY COUNTER WHEREBY SAID DOPPLER FREQUENCIES ARE RECORDED AS A FUNCTION OF TIME AND
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |