Resource Type
Counties
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Improvement in Eyeglasses.
Patent for improvements to eyeglasses to accommodate facial differences.
Date:
July 9, 1878
Creator:
Hawkes, Albert K.
System:
The Portal to Texas History
Solar-Time Instrument.
Patent for a new and improved solar-time instrument with "the telescopic tube provided at one end with a lens, and at the other end with a removable diaphragm having horizontal and vertical lines marked thereon" (page 2).
Date:
September 9, 1879
Creator:
Hayford, Samuel
System:
The Portal to Texas History