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Steel Form for Laying Concrete
Patent for metal forms used in the laying of concrete for construction of sidewalks, curbs, or gutters.
Date:
October 24, 1916
Creator:
Cramer, Walter H.
System:
The Portal to Texas History
Paper Separator
Patent for a paper separator.
Date:
October 24, 1905
Creator:
Brintnall, Harry W. & Venney, Felix A.
System:
The Portal to Texas History
Design for a Nut-Lock Washer.
Design patent for a nut-lock washer that consists of an annular disk having a depression on the margin of its inner opening and with an incision cut in from the periphery, forming a tongue.
Date:
October 24, 1899
Creator:
Carroll, Samuel C.
System:
The Portal to Texas History