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For the Inventor, By the Inventor

Flat Rock, MI, United States of America

Butlerbilt L.l.c.


USPTO Granted Patents = 3

Forward Citations = 0

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2 inventors (with patents filed for the assignee):

goldMedal John F Lambert (3 out of 15 patents)

silverMedal Michael G Butler (3 out of 14 patents)


3 patents:

1. 11769992 - Hydraulic displacement mechanism and method of use (2023-09-26),
2. 11661715 - Manhole guard and attachable winch mount (2023-05-30),
3. 11349285 - Cut resistant knife (2022-05-31),
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USPTO Data Jan 1 1976 - Dec 23 2025

3 Patents

#2 in Flat Rock, MI

#2,442 in Michigan

#71,950 in US

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Flat Rock, MI, United States of America

Butlerbilt L.l.c.

Forward Citations = 0

2 inventors:

goldMedal John F Lambert (3 out of 15 patents)

silverMedal Michael G Butler (3 out of 14 patents)

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