Forward Citations = 159

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6 inventors (with patents filed for the assignee):

Claude D Zehrung, Jr (5 out of 5 patents)

William H Oliver (3 out of 4 patents)

Edward T Biegel (1 out of 6 patents)

4. Richard Tadashi Moran (1 out of 1 patent)

5. Joseph C Martinez (1 out of 1 patent)

6. Clarence L Urie (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 6347593 - Modular dethatcher and seeder (2002-02-19),

2. 5690178 - Sod cutter (1997-11-25),

3. 5680903 - Lawn aerator having tine assemblies spaced along a shaft (1997-10-28),

4. 5119880 - Aerating apparatus (1992-06-09),

5. 4168079 - Movable carrier for storing and transporting normally elongated parts (1979-09-18),

6. 4068455 - Bag for a lawn comber (1978-01-17),

7. 4028868 - Towable lawn comber (1977-06-14),

Company Overview

Bluebird International, Inc. is a leading global provider of innovative solutions for the aerospace, defense, and security industries. With a proven track record of delivering cutting-edge technology and exceptional customer service, Bluebird International is dedicated to helping clients achieve their missions and objectives. Our team of experts specializes in developing customized solutions that meet the unique needs of each customer, ensuring the highest level of performance and reliability. Contact us today to learn more about how Bluebird International can help you succeed.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

7 Patents

#149 in Denver, CO

#869 in Colorado

#39,907 in US

Denver, CO, United States of America

Bluebird International, Inc.

Forward Citations = 159

6 inventors:

Claude D Zehrung, Jr (5 out of 5 patents)

William H Oliver (3 out of 4 patents)

Edward T Biegel (1 out of 6 patents)

4. Richard Tadashi Moran (1 out of 1 patent)

5. Joseph C Martinez (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Bluebird International, Inc.. Retrieved from https://idiyas.com/company/bluebird-international

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]