Inventor

MATHEWS RAYMOND D

6 patents

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

IBM

3 patents

US4264224AApr 28, 1981

Off-the-carrier ribbon feed and drive on a high speed movable-carrier impact printer

IBM10 citations70

US4289983ASep 15, 1981

Encoder for monitoring bidirectional motion

IBM8 citations64

US4345846AAug 24, 1982

Impact printer with dual helix character print elements

IBM1 citations48

MATHEWS RAYMOND D

3 patents

US11079124B1Aug 3, 2021

MATHEWS RAYMOND D

IBM

Off-the-carrier ribbon feed and drive on a high speed movable-carrier impact printer

Encoder for monitoring bidirectional motion

Impact printer with dual helix character print elements

MATHEWS RAYMOND D

Vertical-air wrapped-cloth sleeve evaporative whole-house humidifier system

Room humidifier

Universal spool-free fishing reel and methods of making and using the same