For the Inventor, By the Inventor

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Portsmouth, NH, United States of America

Post Machinery, Inc.

USPTO Granted Patents = 2

Forward Citations = 16

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2 inventors (with patents filed for the assignee):

Charles W Eldridge (1 out of 4 patents)

Chet Zak (1 out of 2 patents)

2 patents: Sort by Forward Citations

1. 4721038 - Station for forming stacks of folded cartons (1988-01-26),

2. 4715846 - Trailing panel folder (1987-12-29),

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USPTO Data Jan 1 1976 - Jan 13 2026

2 Patents

#44 in Portsmouth, NH

#623 in New Hampshire

#92,743 in US

Portsmouth, NH, United States of America

Post Machinery, Inc.

Forward Citations = 16

2 inventors:

Charles W Eldridge (1 out of 4 patents)

Chet Zak (1 out of 2 patents)

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