Inventor
MACGREGOR DOUGLAS
CA9 patents
⚠️ This page may combine multiple inventors who share the name “MACGREGOR DOUGLAS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MACGREGOR DOUGLAS
4 patentsUS5178595AJan 12, 1993
Walking device to assist those with an injury to a lower limb
MACGREGOR DOUGLAS63 citations94
US4350042ASep 21, 1982
Time-depth integrator
MACGREGOR DOUGLAS9 citations71
US5047074ASep 10, 1991
Purging of nitrogen from natural gas
MACGREGOR DOUGLAS13 citations65
US8439684B2May 14, 2013
Method of teaching reading
MACGREGOR DOUGLAS5 citations63