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Will Ross, Inc.

For profit

Phase 1 Phase 2 Phase 3 Phase 4

Acquired by G D Searle → Monsanto → Pharmacia → Pfizer on Sep 7, 1973

Timeline

1910s

Jul 1, 1910
Will Ross, Inc.— Founded

1970s

Sep 7, 1973
G D Searle— Acquired By

2000s

Apr 16, 2003
Pfizer— Now

Details

Founded: Stevens Point, WI, US Jul 1, 1910