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Patent number:
Patent Date:
US Patent: 2,437,317
Spot milling tubular blank for propeller blades
Patentee:
Dwillard J. Davis (
exact
or
similar
names) - Cincinnati, OH
USPTO Classifications:
29/889.61
,
408/16
,
408/88
,
409/184
,
409/186
Tool Categories:
metalworking machines
:
milling machines
Assignees:
Avco Mfg. Corp.
- Greenwich, CT
Manufacturer:
Cincinnati Bickford Tool Co.
- Cincinnati, OH
Witnesses:
Unknown
Patent Dates:
Applied:
Mar. 08, 1945
Granted:
Mar. 09, 1948
Patent Pictures:
USPTO
(New site tip)
Google Patents
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