David McDonald has been granted 10 US patents while listed as an inventor at Unknown . The first was granted in 1985 and the most recent in December 2021. David McDonald ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list David McDonald in Lockport, NY, US.
Patents per Year Patents granted per year, 1985 to 2021 Bar chart with a peak of 1 patents in 1985. peak 1 1985: 1 patents 1985 1987: 1 patents 1987 1992: 1 patents 1992 1999: 1 patents 1999 2000: 1 patents 2000 2002: 1 patents 2002 2003: 1 patents 2003 2011: 1 patents 2011 2020: 1 patents 2020 2021: 1 patents 2021
Issued Patents All Time
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Showing 1–10 of 10 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
11193990 Integrated microfabricated alkali vapor cell sensor with reduced heading error Roozbeh Parsa , Ann Gabrys , Paul Mawson , Anston Joel Lobo 2021-12-07
$28,643,000
10718661 Integrated microfabricated vapor cell sensor with transparent body having two intersecting signal paths Roozbeh Parsa 2020-07-21
$37,976,000
7948184 Vehicle testing lamp apparatus, system, and method David M. Heffelfinger , David A. Pringle , Ashot Nalbandyan 2011-05-24
6619044 Heat exchanger for an electronic heat pump Andrew Batchelor , Ben Banney , Tilak T. Chandratilleke 2003-09-16
6446442 Heat exchanger for an electronic heat pump Andrew Batchelor , Ben Banney , Tilak T. Chandratilleke 2002-09-10
6140778 Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like David A. Pringle , Zhong Yan , George C. Johnson 2000-10-31
5982112 Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like David A. Pringle , Zhong Yan , George C. Johnson 1999-11-09
5150012 Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like David A. Pringle , Zhong Yan 1992-09-22
4683913 Rotary air valve seal arrangement Donald E. Hoffman 1987-08-04
4513771 Air valve Michael J. Thomas 1985-04-30
