Counties
3 Matching Results
Results open in a new window/tab.
Results:
1 - 3 of
3
Setting-Basin Separating Device
Patent for Settling Basin-Separating Devices. This device improves the issue of unwanted discharge shown in prior devices
Date:
May 11, 1990
Creator:
Allen, Charles
System:
The Portal to Texas History
Sanitary Cover-Pad for Mattresses.
Patent for an improvement in sanitary pad covers for mattresses that is washable and contains pocket flaps underneath that can hold a sheet of waterproof material to protect the mattress beneath.
Date:
May 11, 1920
Creator:
Callahan, John William & Callahan, Maud B.
System:
The Portal to Texas History
Threshold
Patent for an improved threshold to fit the bottom of a door more properly to "prevent the entrance of dust, wind, and rain" (lines 16-17).
Date:
May 11, 1915
Creator:
Krause, Ernest
System:
The Portal to Texas History