3 Matching Results
Results open in a new window/tab.
Results:
1 - 3 of
3
Improvement in Spark-Arresters.
Patent for a new and useful Improvements in Spark-Arresters
Date:
April 25, 1876
Creator:
Liscow, Robert
System:
The Portal to Texas History
Improvement in Devices for Teaching Musical Transposition.
Patent for an improvement in devices for teaching musical transposition. The invention in question is composed of a keyboard "with sliding instruments and scales" (1).
Date:
April 25, 1876
Creator:
Allison, Thomas J.
System:
The Portal to Texas History
Improvement in Automatic Fan
Patent for improvement in automatic fans, specifically of a fan attached to a pendulum of a clock mechanism.
Date:
April 25, 1876
Creator:
Gollner, Ervin G. & Fretz, Emil
System:
The Portal to Texas History