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5 Matching Results
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Combined Pencil Holder and Sharpener.
Patent for a combined pencil holder and sharpener, which uses the sharpener as a pencil cap.
Date:
November 30, 1909
Creator:
Haase, Conrad H.
System:
The Portal to Texas History
Combination Drill Bit and Drill Shank
Patent for "Improvements in Combination Drill-Bits and Drill-Shanks" (lines 6-7) including illustrations.
Date:
December 30, 1919
Creator:
Humason, Granville A.
System:
The Portal to Texas History
Locking Mechanism
Patent for locking mechanism, particulalry used in locking liquid dispensing machines.
Date:
January 30, 1917
Creator:
Bradley, Richard C.
System:
The Portal to Texas History
Drill-Bit.
Patent for improvement to drill-bits. The object of the invention is to provide a bit of the character described which is especially adapted for deep well drilling by the rotary process.
Date:
December 30, 1919
Creator:
Humason, Granville A.
System:
The Portal to Texas History
Illuminated Sign and Operating Means Therefor
Patent for an illuminated sign and how to operating means. Illustration included.
Date:
October 30, 1906
Creator:
Dunkle, George Harvey
System:
The Portal to Texas History