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CA Patent: CA-1,455
Improvement on screws and screwdrivers
The Acadia Screw and Driver
Patentee:
John Simeon Armstrong (exact or similar names) - Saint John, NB Canada

USPTO Classifications:

Tool Categories:
screwdrivers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: May 04, 1872

Patent Pictures:
CIPO Data
Report data errors or omissions to steward Steve Gosselin
Description:
The inventor was a student of civil engineering.

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