David Johnston — 8 Patents at Humanscale

David Johnston has been granted 8 US patents while listed as an inventor at Humanscale. The first was granted in 1982 and the most recent in May 2019. David Johnston ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list David Johnston in Millstone Township, NJ, US.

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #	Title	Co-Inventors	Date
10299582	Accessory cart	Jane Abernethy, Robert Volek, Mesve Vardar, Lachezar Tsvetanov, Robert R. King +3 more	2019-05-28
10159337	Accessory cart	Jane Abernethy, Robert Volek, Mesve Vardar, Lachezar Tsvetanov, Robert R. King +3 more	2018-12-25
9775431	Accessory cart	Jane Abernethy, Robert Volek, Mesve Vardar, Lachezar Tsvetanov, Robert R. King +3 more	2017-10-03
9039016	Accessory cart	Jane Abernethy, Robert Volek, Mesve Vardar, Lachezar Tsvetanov, Robert R. King +3 more	2015-05-26
8382309	Light pod system	—	2013-02-26
7650750	Domestic combined heat and power assembly	John Coppendale	2010-01-26
5302055	Signalling device	—	1994-04-12
4343485	Reverse camber ski	Norman H. Johnston	1982-08-10

David Johnston — 8 Patents

Issued Patents All Time

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