US2679620A
(en )
1954-05-25
Line follower
US3976928A
(en )
1976-08-24
Tracer mechanism having servo positioning type control means associated with plural motors
US3010063A
(en )
1961-11-21
Position indicating device
GB841849A
(de )
US3064168A
(en )
1962-11-13
Digitally controlled coarse-fine positioning system
US2866946A
(en )
1958-12-30
Machine tool control
GB740071A
(en )
1955-11-09
Improvements relating to computing apparatus
US4044289A
(en )
1977-08-23
Cycling system for tracer-controlled machine tools
US3882437A
(en )
1975-05-06
Harmonic cancellation in a variable coupling transformer
US4157536A
(en )
1979-06-05
Synchronous transmission device of the vernier resolver type incorporating compensation of parasitic coupling
US3725772A
(en )
1973-04-03
Circuit arrangement for generating a phase-shiftable voltage
US4528484A
(en )
1985-07-09
Electronically controlled motor assembly
US2898541A
(en )
1959-08-04
Preset servo system
US2796568A
(en )
1957-06-18
Cyclic function modifying circuit
US4167719A
(en )
1979-09-11
Variable ratio transformer
US4272814A
(en )
1981-06-09
Apparatus for compensation of commutation dips in synchronizing voltage curves
US2210936A
(en )
1940-08-13
Apparatus for simultaneously measuring two magnitudes through a common line section
US2437951A
(en )
1948-03-16
Follow-up control
US2452042A
(en )
1948-10-26
Transmitter for self-synchronous systems
US3027510A
(en )
1962-03-27
Precision a. c. transducer
US2565781A
(en )
1951-08-28
Device for the remote transmission of rotary movements with correct angular displacement
US1767947A
(en )
1930-06-24
Autotransformer for alternating current having variable transformation ratios
US2833979A
(en )
1958-05-06
Precision transducer
US2882483A
(en )
1959-04-14
Variable linkage transformers
DE1302125B
(de )
1970-01-15