Tx Jim
Well-known Member
- Location
- Coyote Flats, Texas
JD Seller
This is what a US patent search revealed. I saw no mention of Mannheim,Germany although I suppose Mr. Van Gerpen Waterloo,Ia could have been a German.
Jim
https://www.google.com/patents/US2892311?dq=closed+center+hydraulic&hl=en&sa=X&ei=zzQGVJLoMYeQgwTwpIFo&ved=0CC0Q6AEwAg
This is what a US patent search revealed. I saw no mention of Mannheim,Germany although I suppose Mr. Van Gerpen Waterloo,Ia could have been a German.
Jim
https://www.google.com/patents/US2892311?dq=closed+center+hydraulic&hl=en&sa=X&ei=zzQGVJLoMYeQgwTwpIFo&ved=0CC0Q6AEwAg