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US Patent: 4,992X
Machine for Junking Ivory by Steam
Patentees:
Linus Pratt (exact or similar names) - Meriden, CT
Fenner Bush (exact or similar names) - Meriden, CT

USPTO Classifications:
83/409

Tool Categories:
specialty machines : material cutting machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Feb. 09, 1828

Patent Pictures: [ 1 | 2 | 3 ]
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Patent 4992X
Description:
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. Only the patent drawing is available. This patent is in the database for reference only.

This is a stream powered saw for making ivory combs.

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