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For the Inventor, By the Inventor

Brampton, Canada

Bartell Industries Inc.


USPTO Granted Patents = 3

Forward Citations = 17

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2 inventors (with patents filed for the assignee):

goldMedal Frank Zelenka (2 out of 2 patents)

silverMedal Michael Mravyan (1 out of 2 patents)


3 patents:

1. 5890772 - Grinding machine for removing markings from paved surfaces and grinder (1999-04-06),
2. 4725097 - Inclined cutter for surface cleaning head (1988-02-16),
3. 4640553 - Brake system for cutters of surface cleaning cutter cage (1987-02-03),
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USPTO Data Jan 1 1976 - Sep 22 2026

3 Patents

#29 in Brampton

#4,359 in Canada

Brampton, CA
Brampton, Canada

Bartell Industries Inc.

Forward Citations = 17

2 inventors:

goldMedal Frank Zelenka (2 out of 2 patents)

silverMedal Michael Mravyan (1 out of 2 patents)

Please report any incorrect information to [email protected]
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