Company Badge
USPTO Data Jan 1 1976 - Nov 3 2026
3 Patents
#89 in Knoxville, TN
#774 in Tennessee
#73,976 in US
Shoe Spring, Inc.
Forward Citations = 205
3 inventors:
Knoxville, TN, United States of America
Shoe Spring, Inc.
Calculating rank
Trademarks = 2
Forward Citations = 205
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3 inventors (with patents filed for the assignee):
David S Krafsur (3 out of 9 patents)
Francis Edward LeVert (2 out of 26 patents)
Francis E Levert (1 out of 3 patents)
3 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Shoe Spring, Inc.. Retrieved from https://idiyas.com/company/shoe-spring
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]