David Train — 2 Patents at Doble Engineering

David Train — 2 Patents

DEDoble Engineering: 1 patents #13 of 21Top 65%

RMReynolds Metals: 1 patents #133 of 329Top 45%

Midlothian, VA: #415 of 917 inventorsTop 50%

Virginia: #12,799 of 34,511 inventorsTop 40%

Overall (All Time): #1,709,992 of 4,157,543Top 45%

David Train has been granted 2 US patents while listed as an inventor at Doble Engineering. The first was granted in 1981 and the most recent in January 2001. David Train ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list David Train in Midlothian, VA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
6177803	Monitoring elements in a multi-phase alternating current network	Philip A. Von Guggenberg, George A. Cavigelli	2001-01-23
4271964	Folding carton structure	—	1981-06-09	$1,603,000

David Train — 2 Patents

Issued Patents All Time

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