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For the Inventor, By the Inventor

Mankato, MN, United States of America

Vibra-King, Inc.


USPTO Granted Patents = 3

Trademarks = 5

Forward Citations = 24

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2 inventors (with patents filed for the assignee):

goldMedal Richard W Steinberg (3 out of 18 patents)

silverMedal Jon M Promersberger (1 out of 1 patent)


3 patents:

1. 4318638 - Cable detensioning apparatus (1982-03-09),
2. 4102403 - Apparatus for making a slit trench (1978-07-25),
3. 4102402 - Subsoiler (1978-07-25),
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USPTO Data Jan 1 1976 - Oct 6 2026

3 Patents

#14 in Mankato, MN

#1,979 in Minnesota

#73,815 in US

Mankato, MN (US)
Mankato, MN, United States of America

Vibra-King, Inc.

Forward Citations = 24

2 inventors:

goldMedal Richard W Steinberg (3 out of 18 patents)

silverMedal Jon M Promersberger (1 out of 1 patent)

Please report any incorrect information to [email protected]
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