I have been unable to find this Martin Maurer in US Census records to get his birth date, or to find a death record. There is a mention of him in the Cassville, MO newspaper 3 Oct. 1895, stating that he was to move to Louisiana. This could mean the state or Louisiana, MO.
Beginning in 1903, a Martin Maurer of Pueblo, Colorado received at least 8 patents for scales and improvements to scales. The first one used one of the same patent attorneys as the concrete tool patents. It may be the same person, but I have no verification of that.
US Patent 460,644 Device for blocking off artificial-stone pavements
US Patent 460,645 Device for rounding and smoothing the edges of artificial-stone gutters
|Cassville, MO newspaper, 3 Oct. 1895|