Alan Sprain — 3 Patents at Input/Output

Alan Sprain has been granted 3 US patents while listed as an inventor at Input/Output. The first was granted in 1999 and the most recent in July 2001. Alan Sprain ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Alan Sprain in Houston, TX, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
6262945	Seismic signal coupling device and method	Michael Maples, Yves Delassis, Julien Meunier	2001-07-17
6031789	Magnetic drive subassembly in a depth control device	Keith Broussard, Louis W. Erath	2000-02-29	$5,155,000
5949214	Rechargeable battery pack	Keith Broussard	1999-09-07	$7,332,000

Alan Sprain — 3 Patents

Issued Patents All Time

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