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For the Inventor, By the Inventor

Northfield, MN, United States of America

Don Allen, Inc.


USPTO Granted Patents = 1

Forward Citations = 12

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1 inventor (with patents filed for the assignee):

goldMedal Donald L Allen (1 out of 7 patents)


1 patent:

1. 4227557 - Replication apparatus (1980-10-14),
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USPTO Data Jan 1 1976 - Dec 16 2025

1 Patents

#19 in Northfield, MN

#3,497 in Minnesota

#133,784 in US

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Northfield, MN, United States of America

Don Allen, Inc.

Forward Citations = 12

1 inventor:

goldMedal Donald L Allen (1 out of 7 patents)

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