Douglas MacPherson — 2 Patents at Unknown

Douglas MacPherson has been granted 2 US patents while listed as an inventor at Unknown. The first was granted in 1982 and the most recent in May 2014. Douglas MacPherson ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Douglas MacPherson in Tampa, FL, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
8715582	Apparatus and method for producing activated carbon	Earl R. Decker, Walter David Hemenway, Carl B. Melanson	2014-05-06
4356724	Apparatus and method for testing transmissions	Stephen J. Ayoub, Thomas Rizzo	1982-11-02

Douglas MacPherson — 2 Patents

Issued Patents All Time

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