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For the Inventor, By the Inventor

Livonia, MI, United States of America

Airotrust LLC


USPTO Granted Patents = 2

Forward Citations = 1

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2 inventors (with patents filed for the assignee):

goldMedal Glenn R Sprague (2 out of 4 patents)

silverMedal Matthew J Carr (2 out of 2 patents)


2 patents:

1. D1077171 - Multi-piece air filter housing (2025-05-27),
2. 12121840 - Multi-piece HVAC air filter housing, filter assembly and methods (2024-10-22),
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USPTO Data Jan 1 1976 - Oct 6 2026

2 Patents

#63 in Livonia, MI

#3,186 in Michigan

#94,782 in US

Livonia, MI (US)
Livonia, MI, United States of America

Airotrust LLC

Forward Citations = 1

2 inventors:

goldMedal Glenn R Sprague (2 out of 4 patents)

silverMedal Matthew J Carr (2 out of 2 patents)

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