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5 Matching Results
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Drill Bit
Patent for drill bit, adapted for use in boring (or drilling) of oil wells with bit shank and enlarged head of angularly mounted rotary cutters (for outward cutting of well walls).
Date:
January 3, 1922
Creator:
Thomas, Martin E.
System:
The Portal to Texas History
Porositization Process of Carbon or Carbonaceous Materials
Patent relating to porositized carbon processed from carbon or carbonaceous materials.
Date:
March 14, 2014
Creator:
Shi, Sheldon Q. & Xia, Changlei
System:
The UNT Digital Library
Milling-Machine.
Patent for a milling machine that executes thorough removal of dirt and other substances.
Date:
February 3, 1914
Creator:
Lakey, William Ray.
System:
The Portal to Texas History
Methods for Extending the Freshness of Cut Flowers, Ornamental Trees, and Plant Cuttings
Patent relating to methods for extending the freshness of cut flowers, ornamental trees, and plant cuttings.
Date:
October 30, 2000
Creator:
Chapman, Kent D. & Austin-Brown, Shea L.
System:
The UNT Digital Library
Book-Rest for Writing Desks and Tables.
Patent for an improved book-rest for writing desks and tables used to support record-books upon desks or tables in such positions that they can be conveniently used.
Date:
October 3, 1882
Creator:
Terrill, Reuben W.
System:
The Portal to Texas History