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Home › Automatic Switch › Ralph H. Ringstad

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Ralph H. Ringstad — 1 Patent

ASAutomatic Switch: 1 patents #40 of 74Top 55%

Whippany, NJ: #108 of 163 inventorsTop 70%

New Jersey: #41,444 of 69,400 inventorsTop 60%

Overall (All Time): #2,406,284 of 4,157,543Top 60%

1 Patents All Time

Ralph H. Ringstad has been granted 1 US patent while listed as an inventor at Automatic Switch. All of these patents were granted in 1983. Ralph H. Ringstad ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Ralph H. Ringstad in Whippany, NJ, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
4405867	System for transferring a load between two power sources without interruption of power to the load	William A. Moakler	1983-09-20	$2,040,000

Ralph H. Ringstad — 1 Patent

Issued Patents All Time

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