For the Inventor, By the Inventor

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St. Louis, MO, United States of America

Killark Electric Manufacturing Co.

USPTO Granted Patents = 3

Trademarks = 4

Forward Citations = 119

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4 inventors (with patents filed for the assignee):

Edward J Falk (1 out of 16 patents)

Thomas E Gill (1 out of 1 patent)

Lawrence J Brombolich (1 out of 1 patent)

4. Rolland R Roots (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 4664281 - Explosion proof enclosure (1987-05-12),

2. 4638297 - Remote signaling box (1987-01-20),

3. 4337972 - Panel board safety latch assembly (1982-07-06),

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USPTO Data Jan 1 1976 - Dec 16 2025

3 Patents

#367 in St. Louis, MO

#994 in Missouri

#71,953 in US

St. Louis, MO, United States of America

Killark Electric Manufacturing Co.

Forward Citations = 119

4 inventors:

Edward J Falk (1 out of 16 patents)

Thomas E Gill (1 out of 1 patent)

Lawrence J Brombolich (1 out of 1 patent)

4. Rolland R Roots (1 out of 1 patent)

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