% Expired Patents = 33.3

Trademarks = 4

Forward Citations = 58

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5 inventors (with patents filed for the assignee):

Edward C Flory (1 out of 13 patents)

Edward H Saladin (1 out of 1 patent)

Larry L Carpenter (1 out of 1 patent)

4. James E Krueger (1 out of 1 patent)

5. Duane B Grahovec (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 6705137 - Lock device for semitrailers and the like (2004-03-16),

2. 5819560 - Plastic lock (1998-10-13),

3. 5572890 - High security lock system including cover plate (1996-11-12),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

3 Patents

#4 in Crete, IL

#3,453 in Illinois

#73,904 in US

Crete, IL, United States of America

American Lock Company

Forward Citations = 58

5 inventors:

Edward C Flory (1 out of 13 patents)

Edward H Saladin (1 out of 1 patent)

Larry L Carpenter (1 out of 1 patent)

4. James E Krueger (1 out of 1 patent)

5. Duane B Grahovec (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: American Lock Company. Retrieved from https://idiyas.com/company/american-lock-company

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]