Litchford; George B.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Litchford; George B..The latest application filed is for "passive secondary surveillance radar using signals of remote ssr and multiple antennas switched in synchronism with rotation of ssr beam".

Company Profile

0.24.0

Litchford; George B. - Northport NY

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Passive secondary surveillance radar using signals of remote SSR and multiple antennas switched in synchronism with rotation of SSR beam Grant 5,198,823 - Litchford , et al. March 30, 1	1993-03-30
Passive SSR system utilizing P3 and P2 pulses for synchronizing measurements of TOA data Grant 5,196,856 - Litchford , et al. March 23, 1	1993-03-23
Virtual secondary surveillance radar using signals of remote SSR Grant 5,140,328 - Litchford , et al. August 18, 1	1992-08-18
Virtual ATCRBS using signals of remote SSR Grant 4,899,156 - Litchford , et al. February 6, 1	1990-02-06
Collision avoidance system Grant 4,789,865 - Litchford December 6, 1	1988-12-06
Collision avoidance system Grant 4,768,036 - Litchford , et al. August 30, 1	1988-08-30
Position finding and collision avoidance system Grant 4,733,241 - Litchford , et al. March 22, 1	1988-03-22
Simple passive/active proximity warning system Grant 4,642,648 - Hulland , et al. February 10, 1	1987-02-10
Collision avoidance system Grant 4,486,755 - Hulland , et al. December 4, 1	1984-12-04
Radiolocation with respect to an Own station, using Omega signals or the like Grant 4,191,958 - Hulland , et al. March 4, 1	1980-03-04
Passive ATCRBS using signals of remote SSR Grant 4,115,771 - Litchford September 19, 1	1978-09-19
Proximity indication with range and bearing measurements Grant RE29,260 - Litchford June 7, 1	1977-06-07
Collision avoidance/proximity warning system using secondary radar Grant 4,027,307 - Litchford May 31, 1	1977-05-31
Collision avoidance system Grant 4,021,802 - Litchford May 3, 1	1977-05-03
Proximity indication with means for computing the distance from an own station to an interrogating secondary surveillance radar Grant 3,959,793 - Litchford May 25, 1	1976-05-25
Proximity indication with range and bearing measurements Grant 3,921,172 - Litchford * November 18, 1	1975-11-18
Method and apparatus for measuring passively range and bearing Grant 3,895,382 - Litchford July 15, 1	1975-07-15
Adaptive Proximity Indicating System Grant 3,875,570 - Litchford April 1, 1	1975-04-01
Proximity Indication With Range And Bearing Measurements Grant 3,858,210 - Litchford December 31, 1	1974-12-31
Proximity Indication With Range And Bearing Measurements Grant 3,858,211 - Litchford December 31, 1	1974-12-31
Aircraft Instrument Landing System Grant 3,757,337 - Litchford September 4, 1	1973-09-04
Common Azimuth Sector Indicating System Grant 3,735,408 - Litchford May 22, 1	1973-05-22
Altitude Measuring System Grant 3,696,418 - Litchford October 3, 1	1972-10-03
Proximity Indicator Systems Using Transponders Grant 3,626,411 - Litchford December 7, 1	1971-12-07

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