For the Inventor, By the Inventor

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Muskegon, MI, United States of America

Clarke-gravely Corporation

USPTO Granted Patents = 30

Forward Citations = 537

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18 inventors (with patents filed for the assignee):

Thomas S Block (9 out of 19 patents)

Dale E Lowder (4 out of 6 patents)

Paul E Phillips (3 out of 16 patents)

4. Eugene L Bothun (3 out of 3 patents)

5. Walter L Bessinger (2 out of 20 patents)

6. Robert P Whitney (2 out of 4 patents)

7. Bertel S Nelson (2 out of 14 patents)

8. Wilfred C Nise (2 out of 2 patents)

9. Jack L Hommes (2 out of 2 patents)

10. Terry H Jones (2 out of 2 patents)

11. Thomas G Cannon (2 out of 3 patents)

12. Melvin R Smith (1 out of 1 patent)

13. John J Oakes (1 out of 1 patent)

14. Donald L Menchoffer (1 out of 1 patent)

15. Ronald K Dunn (1 out of 1 patent)

30 patents: Sort by Forward Citations

1. 4293971 - Floor treating machine with squeegee (1981-10-13),

2. D259566 - Carpet extractor (1981-06-16),

3. 4268935 - Carpet cleaning machine (1981-05-26),

4. D258963 - Carpet extractor solution and recovery apparatus (1981-04-21),

5. 4251896 - Floor machine with gimballed brush drive (1981-02-24),

6. 4240569 - Carpet cleaning powder dispenser (1980-12-23),

7. 4237571 - Floor polisher with gear drive (1980-12-09),

8. 4236269 - Vertical axis brush (1980-12-02),

9. 4222145 - Vacuum cleaner carriage and tank assembly (1980-09-16),

10. 4218798 - Floor treating machine (1980-08-26),

11. 4214337 - Floor polisher (1980-07-29),

12. D255356 - Powered sweeper (1980-06-10),

13. 4195969 - Vacuum cleaner (1980-04-01),

14. 4192525 - Steering sulky for two-wheel tractors (1980-03-11),

15. D253472 - Vacuum cleaner (1979-11-20),

Clarke-gravely Corporation is a leading manufacturer of industrial equipment, specializing in heavy machinery and construction vehicles. With over 50 years of experience, we provide top-quality products and exceptional customer service. Our innovative solutions and cutting-edge technology have helped us build a strong reputation in the industry.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

30 Patents

#4 in Muskegon, MI

#409 in Michigan

#10,859 in US

#21,181 in the World

Muskegon, MI, United States of America

Clarke-gravely Corporation

Forward Citations = 537

18 inventors:

Thomas S Block (9 out of 19 patents)

Dale E Lowder (4 out of 6 patents)

Paul E Phillips (3 out of 16 patents)

4. Eugene L Bothun (3 out of 3 patents)

5. Walter L Bessinger (2 out of 20 patents)

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