Trademarks = 2

Forward Citations = 23

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3 inventors (with patents filed for the assignee):

Marshall Duffield (5 out of 9 patents)

Arthur J Heiser, Jr (1 out of 1 patent)

James F Calvagna (1 out of 2 patents)

6 patents: Sort by Forward Citations

1. 11447946 - Portable shelter (2022-09-20),

2. 10190310 - Waterproof storage unit (2019-01-29),

3. 8240269 - Boat window system (2012-08-14),

4. 8002141 - Waterproof storage unit (2011-08-23),

5. 7806661 - Propeller (2010-10-05),

6. 7015822 - Battery capacity and usage system (2006-03-21),

Duffield Marine, Inc. is a leading marine engineering company specializing in the design and construction of high-performance boats and yachts. With over 30 years of experience, they provide innovative solutions for the maritime industry, ensuring top-quality vessels for their clients worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

6 Patents

#51 in Costa Mesa, CA

#10,297 in California

#43,823 in US

Costa Mesa, CA, United States of America

Duffield Marine, Inc.

Forward Citations = 23

3 inventors:

Marshall Duffield (5 out of 9 patents)

Arthur J Heiser, Jr (1 out of 1 patent)

James F Calvagna (1 out of 2 patents)

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