Resource Type
Counties
3 Matching Results
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Sash Lock
Patent for an improvement for window sash locks, with an improved ability to hold windows in place.
Date:
January 10, 1922
Creator:
Brown, John A.
System:
The Portal to Texas History
Drafting Implement
Patent for drafting implement, for laying out or plotting curves of different degrees and combining the functions of a plurality of implements into a single implement.
Date:
January 3, 1922
Creator:
Tanner, John L.
System:
The Portal to Texas History
Dental-Broach Holder.
Patent for a dental broach holder that can be easily cleaned, and that includes certain structural elements that keep a dental broach more secure during use. The broach fastens on the outside of the holder, the mechanism of which "[prevents] loss of the broach in the patient's mouth during operation" (lines 92-94).
Date:
January 24, 1922
Creator:
Gilbert, James M.
System:
The Portal to Texas History