Mark W. McElfresh — 5 Patents at Unknown

Mark W. McElfresh has been granted 5 US patents while listed as an inventor at Unknown. The first was granted in 1987 and the most recent in August 1996. Mark W. McElfresh ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Mark W. McElfresh in Erlanger, KY, US.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
D372768	Air treatment device	Christopher Miller, Thomas B. Aldrich, III, Guy Williams, Yeong C. Park	1996-08-13
5527493	Air treating device	Jim F. Warner, Young C. Park, Charles A. Curtiss, Martin Bogenstaerter	1996-06-18	$19,468,000
5478505	Air treating device	Jim F. Warner, Young C. Park, Charles A. Curtiss, Martin Bogenstaerter	1995-12-26
4960240	Air freshener with integral tear-away tab	—	1990-10-02	$56,990,000
4660231	Automatic toilet bowl cleaner dispenser	Martin E. Bellersen	1987-04-28	$21,454,000

Mark W. McElfresh — 5 Patents

Issued Patents All Time

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