Inventor · disambiguated record
Roy D. Holtham
Also filed as: HOLTHAM ROY D
1 granted patent·19 citations·filing 1984–1984
40Inventor score
Technology areasF23J
Files withCOAL INDUSTRY PATENTS LTD1
Top patents by PatentIndex Score
1 recordJoin the waitlist — get patent alerts
Get an alert when Roy D. Holtham 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 →