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For the Inventor, By the Inventor

Montpelier, OH, United States of America

Robinair Division


USPTO Granted Patents = 3

Forward Citations = 66

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2 inventors (with patents filed for the assignee):

goldMedal Gary P Murray (3 out of 35 patents)

silverMedal Ralph C Lower (1 out of 5 patents)


3 patents:

1. 4631006 - Compact vacuum pump (1986-12-23),
2. 4540353 - Two stage vacuum pump with shaft seal (1985-09-10),
3. 4523897 - Two stage vacuum pump (1985-06-18),
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USPTO Data Jan 1 1976 - Jan 13 2026

3 Patents

#5 in Montpelier, OH

#2,790 in Ohio

#72,115 in US

...
Montpelier, OH, United States of America

Robinair Division

Forward Citations = 66

2 inventors:

goldMedal Gary P Murray (3 out of 35 patents)

silverMedal Ralph C Lower (1 out of 5 patents)

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