Inventor
COLLINS DAVID W
US7 patents
⚠️ This page may combine multiple inventors who share the name “COLLINS DAVID W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IBM
5 patentsUS4549232AOct 22, 1985
Phase modulated servo system
IBM126 citations92
US4275339AJun 23, 1981
Bifilar brushless DC motor
IBM36 citations92
US4642562AFeb 10, 1987
Phase difference demodulator
IBM17 citations69
US4477750AOct 16, 1984
Multi-level disk drive motor speed control
IBM4 citations59
US4630150ADec 16, 1986
Optical tool for aligning transducer head assemblies
IBM2 citations57