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Patent number:
Patent Date:
US Patent: 405,163
Elevator-hatchway
Patentees:
Christian Petersen (
exact
or
similar
names) - Baltimore, MD
Francis X. Hooper (
exact
or
similar
names) - Baltimore, MD
USPTO Classifications:
187/338
Tool Categories:
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
John E. Morris
John T. Maddox
Patent Dates:
Applied:
Aug. 07, 1888
Granted:
Jun. 11, 1889
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for F. X. Hooper Co.
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