Derrick Merrill — 2 Patents at Rotabroach

Derrick Merrill has been granted 2 US patents while listed as an inventor at Rotabroach. All of these patents were granted in 1993. Derrick Merrill ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Derrick Merrill in Dronfield, GB.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5246318	Annular hole cutter	—	1993-09-21
5218888	Annular hole cutter	—	1993-06-15

Derrick Merrill — 2 Patents

Issued Patents All Time

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