Robert E. Spenk — 2 Patents at General Motors

Robert E. Spenk has been granted 2 US patents while listed as an inventor at General Motors. The first was granted in 1987 and the most recent in September 1990. Robert E. Spenk ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Robert E. Spenk in Chicago, IL, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4955304	Remote locomotive spotter control	Pesi A. Vazifdar, John A. Janowski, Jr.	1990-09-11
4660895	Railway locomotive brake control system	Wayne Chlumecky, John H. Cryder, Robert A. Colombo	1987-04-28

Robert E. Spenk — 2 Patents

Issued Patents All Time

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