Inventor · disambiguated record

Donald B. Butterfield

Also filed as: BUTTERFIELD DONALD B

1 granted patent·29 citations·filing 1990–1990

44Inventor score
Technology areasF02M
Files withAIL CORP1

Top patents by PatentIndex Score

1 record

Join the waitlist — get patent alerts

Get an alert when Donald B. Butterfield files or is granted a new patent.

We store only your email — no account needed. See our privacy policy.

Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →