30 Utility Patents
#134 in Pittsburgh, PA
#1,487 in Pennsylvania
#47,663 in US
#92,156 in the World
Forward Citations = 225
Company Filing History:
Dravo Lime Company

Other
4. 1 out of 3
U.S. Department of Agriculture
5. 1 out of 2
Dravo Lime, Inc.
where one patent can have more than one assignee
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