Counties
Language
2 Matching Results
Results open in a new window/tab.
Results:
1 - 2 of
2
Coin-Wrapping Device.
Patent for a coin wrapper (primarily used in banks) that uses a strip of carbon paper to create an imprint of the coins contained inside, which will remain after the coins are removed. The purpose of this is to create a record of the original number of coins to facilitate their counting and verification.
Date:
November 15, 1921
Creator:
Mohr, Arthur D.
System:
The Portal to Texas History
Process for Converting Sodium Sulfate to Sodium Sulfid.
Patent for converting sodium sulfate to sodium sulfid, it is a process conversion of chemical compounds sodium sulfate to sodium sulfid.
Date:
November 22, 1921
Creator:
Anderson, Robert James
System:
The Portal to Texas History