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Patent number:
Patent Date:
US Patent: 1,346,812
Collapsible spool
Patentee:
Ernest W. Duston (
exact
or
similar
names) - Waterbury, CT
USPTO Classifications:
242/575.5
,
242/586.5
,
279/2.2
Tool Categories:
Assignees:
Blake & Johnson Co.
- Waterbury, CT
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Jan. 30, 1920
Granted:
Jul. 20, 1920
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Blake & Johnson Co.
Description:
Of interest because the assignee also made a pedestal grinder.
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