Description:

"PNEUMATIC" TELEGRAPH PATENT
Interesting manuscript D.S., 2pp. legal folio, [York, Pa.], April 18, 1862, and agreement between Congressman ADAM J. GLOSSBRENNER and inventor HENRY K. GARDNER concerning Gardner''s invention of an "Improvement in pneumatic telegraphs", Patent 35416A. In exchange for the powerful Pennsylvania politician''s support of his constituent''s invention, Gardner promises to share the profits arising from the sale of the invention equally with Glossbrenner. Signed by both at conclusion. A 6" horizontal fold split, else very good. Gardner''s invention used compressed air between sending and receiving telegraph units to activate a pen at either end which would leave a mark on a paper as long as the sender''s plunger was pushed.

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April 18, 2018 10:00 AM EDT
Elkton, MD, US

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$0 $99 $10
$100 $499 $20
$500 $999 $50
$1,000 $1,999 $100
$2,000 $4,999 $250
$5,000 $9,999 $500
$10,000 $19,999 $1,000
$20,000 $49,999 $2,500
$50,000 $99,999 $5,000
$100,000 + $10,000