For the Inventor, By the Inventor

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Spokane, WA, United States of America

Spokane Crusher Mfg. Co.

USPTO Granted Patents = 4

Forward Citations = 54

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4 inventors (with patents filed for the assignee):

Kenneth D Warren (3 out of 6 patents)

Gregory George Tenold (2 out of 4 patents)

Fred C Archer (1 out of 1 patent)

4. Donald R Warren (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 4397426 - Shoe bracket assembly for vertical shaft impact crushing machines (1983-08-09),

2. 4355769 - Impeller shoe assembly (1982-10-26),

3. 4347988 - Anvil assembly for vertical shaft centrifugal impact crushing machine (1982-09-07),

4. 4340469 - Vibratory screen apparatus (1982-07-20),

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USPTO Data Jan 1 1976 - Dec 30 2025

4 Patents

#53 in Spokane, WA

#1,405 in Washington

#59,047 in US

Spokane, WA, United States of America

Spokane Crusher Mfg. Co.

Forward Citations = 54

4 inventors:

Kenneth D Warren (3 out of 6 patents)

Gregory George Tenold (2 out of 4 patents)

Fred C Archer (1 out of 1 patent)

4. Donald R Warren (1 out of 1 patent)

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