Inventor
JOHNSON RALPH E
39 patents
⚠️ This page may combine multiple inventors who share the name “JOHNSON RALPH E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SINGER CO
25 patentsUS4193361AMar 18, 1980
Sewing machine construction utilizing subassemblies
SINGER CO22 citations82
US4437421AMar 20, 1984
Variable pull off for bobbin thread
SINGER CO7 citations74
US4341171AJul 27, 1982
Thread handling device for lockstitch sewing machines
SINGER CO11 citations74
US4292906AOct 6, 1981
Rotatable loop taker and bobbin case assembly
SINGER CO10 citations74
US4278038AJul 14, 1981
Combined needle guard and hook beak for a sewing machine hook
SINGER CO8 citations74
US4263859AApr 28, 1981
Thread handling system for a sewing machine
SINGER CO14 citations74
US4259914AApr 7, 1981
Bobbin winding mechanism for a sewing machine
SINGER CO14 citations74
US4246855AJan 27, 1981
Compensating needle bar connecting linkage for a sewing machine
SINGER CO8 citations74
US4215639AAug 5, 1980
Selectively controllable bobbin thread pull-off mechanism
SINGER CO9 citations74
US4182250AJan 8, 1980
Bobbin thread control means for a lock stitch sewing machine
SINGER CO10 citations74
US4095539AJun 20, 1978
Needle thread work limb retainers
SINGER CO9 citations74
US4159003AJun 26, 1979
Convertible work feeding device for sewing machines
SINGER CO9 citations70
US4413579ANov 8, 1983
Bobbin case retaining means
SINGER CO3 citations63
US4320712AMar 23, 1982
Thread handling
SINGER CO5 citations63
US4241679ADec 30, 1980
Inertial thread snubbing device for a sewing machine
SINGER CO5 citations63
US4215638AAug 5, 1980
Needle bar suspension means for a zig-zag sewing machine
SINGER CO3 citations63
US4183310AJan 15, 1980
Feed and loop taker module for a sewing machine
SINGER CO6 citations63
US4178865ADec 18, 1979
Finger guard for sewing machines
SINGER CO6 citations63
US4127076ANov 28, 1978
Needle bar frame for a sewing machine
SINGER CO2 citations63
US4121527AOct 24, 1978
Hook drive for sewing machines
SINGER CO6 citations63
US4714037ADec 22, 1987
Needle looper assembly for non-threaded needle lockstitching
SINGER CO3 citations61
US4188895AFeb 19, 1980
Needle bight control mechanism
SINGER CO4 citations57
US4132454AJan 2, 1979
Three position sewing machine cabinet platform
SINGER CO2 citations57
US4213410AJul 22, 1980
Adjustable hook for a sewing machine
SINGER CO1 citations52
US4131076ADec 26, 1978
Sewing machine work feeding mechanism
SINGER CO1 citations52
MAG INSTR INC
9 patentsUS4823242AApr 18, 1989
Double switch miniature flashlight
MAG INSTR INC145 citations99
US5528472AJun 18, 1996
Rechargeable miniature flashlight
MAG INSTR INC48 citations96
US5121308AJun 9, 1992
Miniature flashlight with two switches
MAG INSTR INC93 citations96
US5008785AApr 16, 1991
Rechargeable miniature flashlight
MAG INSTR INC88 citations96
US4885668ADec 5, 1989
Heat shield
MAG INSTR INC72 citations96
US5455752AOct 3, 1995
Rechargeable miniature flashlight
MAG INSTR INC33 citations92
US5267130ANov 30, 1993
Rechargeable miniature flashlight
MAG INSTR INC34 citations92
US5193898AMar 16, 1993
Rechargeable miniature flashlight
MAG INSTR INC32 citations92
USD303107SAug 29, 1989
Miniature flashlight recharger
MAG INSTR INC29 citations92
ILLUMINATION TECHNOLOGY INC
3 patentsUS7106002B1Sep 12, 2006
Light bulb with glass envelope having light transmission of a wavelength only up to 700 nm
ILLUMINATION TECHNOLOGY INC7 citations70
US5686786ANov 11, 1997
Light bulb with glass envelope having light transmission of a wavelength only up to 700mm
ILLUMINATION TECHNOLOGY INC7 citations70
US5382874AJan 17, 1995
Self-aligning light directing surface mountable miniature incandescent lamp
ILLUMINATION TECHNOLOGY INC6 citations62