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x-patents:x-435

Patent X-435: 1803-03-18, Submarine passage or hollow inverted arch

X Number Date Inventor City Title Status
X-435 1803-03-18 John Staples Jr. Long Island, Queens County, NY Submarine passage or hollow inverted arch Missing

Comments

Most of the patents prior to 1836 were lost in the Dec. 1836 fire. Only about 2,000 of the almost 10,000 documents were recovered. Little is known about this patent. There are no patent drawings available. This patent is in the database for reference only.

Information Sources

(To be filled in.)

x-patents/x-435.txt · Last modified: 2019/05/25 21:49 by 127.0.0.1

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