For the Inventor, By the Inventor

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Pittsburgh, PA, United States of America

National Mine Service Company

USPTO Granted Patents = 29

Forward Citations = 230

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17 inventors (with patents filed for the assignee):

Maurice K LeBegue (13 out of 13 patents)

Donald L Freed, Jr (5 out of 8 patents)

Gerald L Baum (4 out of 4 patents)

4. Charles R Herron (3 out of 5 patents)

5. Earl C Michael (3 out of 3 patents)

6. Frank X McNally (2 out of 5 patents)

7. Ronald W Keen (2 out of 2 patents)

8. Joachim N Blutreich (1 out of 1 patent)

9. Allen L Jasper (1 out of 1 patent)

10. Donald E Keller (1 out of 1 patent)

11. Leon H Shoemaker (1 out of 1 patent)

12. Barry R Kelley (1 out of 1 patent)

13. Gary H Thorne (1 out of 1 patent)

14. Jerry Karlovsky (1 out of 1 patent)

15. Rowland A Hill (1 out of 1 patent)

29 patents: Sort by Forward Citations

1. 4641888 - Material gathering device for a mining machine (1987-02-10),

2. 4633147 - Electric powered vehicle and method of propelling the same (1986-12-30),

3. 4582363 - Drive assembly for mining machine cutter drum (1986-04-15),

4. 4556200 - Re-railing jack (1985-12-03),

5. 4546849 - Machine operators compartment (1985-10-15),

6. 4538941 - Rock duster apparatus (1985-09-03),

7. 4531784 - Mining machine with dust collector apparatus (1985-07-30),

8. 4380354 - Mining machine loading bin mounted on boom structure and method (1983-04-19),

9. 4339153 - Apparatus for extending and retracting the cutter bars of a boring type (1982-07-13),

10. 4332772 - Portable gas detector (1982-06-01),

11. 4316635 - Extensible and retraciable rotor arm cutting assembly (1982-02-23),

12. 4315956 - Process for depositing cobalt ondes on a refractory-coated platinum (1982-02-16),

13. 4310199 - Cutter drum assembly for a continuous mining machine (1982-01-12),

14. 4299424 - Cutting tool assembly (1981-11-10),

15. 4296856 - Material gathering device for a mining machine (1981-10-27),

National Mine Service Company is a leading provider of mining equipment and services. With over 20 years of experience, we specialize in supplying top-quality mining machinery, tools, and safety equipment to support safe and efficient operations in the mining industry. Our comprehensive range of products includes drilling equipment, explosives, ventilation systems, and much more. We are committed to delivering exceptional customer service and tailored solutions for our clients' specific needs. Visit our website to learn more about our products and services.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

29 Patents

#64 in Pittsburgh, PA

#423 in Pennsylvania

#11,224 in US

#21,855 in the World

Pittsburgh, PA, United States of America

National Mine Service Company

Forward Citations = 230

17 inventors:

Maurice K LeBegue (13 out of 13 patents)

Donald L Freed, Jr (5 out of 8 patents)

Gerald L Baum (4 out of 4 patents)

4. Charles R Herron (3 out of 5 patents)

5. Earl C Michael (3 out of 3 patents)

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