Inventor · disambiguated record
Douglas R. Hagge
Also filed as: HAGGE DOUGLAS R
3 granted patents·44 citations·filing 1985–1988
70Inventor score
Files withCARDINAL IND INC3
Top patents by PatentIndex Score
3 records- 0167US4699558AMobile cargo loader for lifting and transporting building modules and the likeCARDINAL IND INC·Filed 1986·Granted Oct 13, 1987·33 cites·2 claims
- 0233US4640528ATorsion-absorbing highway semitrailerCARDINAL IND INC·Filed 1985·Granted Feb 3, 1987·7 cites·9 claims
- 0324US4826195AAuxiliary towing apparatus for tractor trucks and the likeCARDINAL IND INC·Filed 1988·Granted May 2, 1989·4 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →