Inventor
FINKEL JOEL R
US4 patents
⚠️ This page may combine multiple inventors who share the name “FINKEL JOEL R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
XEROX CORP
3 patentsUS4671839AJun 9, 1987
Secure identification card manufacture
XEROX CORP28 citations91
US4738901AApr 19, 1988
Method and apparatus for the prevention of unauthorized copying of documents
XEROX CORP42 citations90
US4678322AJul 7, 1987
Method and apparatus for the prevention of unauthorized copying of documents
XEROX CORP33 citations90