P

Inventor

ENGELMANN RUDOLPH H

US10 patents
⚠️ This page may combine multiple inventors who share the name “ENGELMANN RUDOLPH H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ELECTRO VOICE

4 patents
US4717889AJan 5, 1988

Power control system for periodically and selectively energizing or shorting primary windings of transformers for controlling the output voltage across a common secondary winding

ELECTRO VOICE52 citations95
US4716353ADec 29, 1987

Battery charger

ELECTRO VOICE39 citations91
US4673888AJun 16, 1987

Power control system

ELECTRO VOICE81 citations90
US4779035AOct 18, 1988

End of charge detector

ELECTRO VOICE20 citations81

ENGELMANN RUDOLPH H

3 patents
US4279852AJul 21, 1981

Indicia producing method

ENGELMANN RUDOLPH H22 citations80
US4987385AJan 22, 1991

High efficiency power amplifier

ENGELMANN RUDOLPH H15 citations71
US4982148AJan 1, 1991

Power factor maintenance system

ENGELMANN RUDOLPH H12 citations71

PAKO CORP

1 patent
US4138607AFeb 6, 1979

Dual priority temperature control

PAKO CORP24 citations81

JAMES VON BANK

1 patent
US4219872AAug 26, 1980

Power supply

JAMES VON BANK23 citations78

SEIFRIED HILDEGARDE

1 patent
US4130819ADec 19, 1978

Optical character recognition device

SEIFRIED HILDEGARDE10 citations68