IP Library › Granted Patent US 4,917,992
Granted Patent Utility
US 4,917,992 · App. 07/111,807

Developing agents

Inventors: Malcolm D. Tirel, William E. Long
Patented Case View Patent ↗
Granted: Apr 17, 1990 Filed: Oct 23, 1987
Inventors
Malcolm D. Tirel
William E. Long
Assignee (at issue)
Ciba-Geigy

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Quick Facts
Patent No.
US 4,917,992
App. No.
07/111,807
Filed
1987-10-23
Granted
1990-04-17
Kind
A