CA237093A - Controlled shutter - Google Patents

Controlled shutter

Info

Publication number
CA237093A
CA237093A CA237093A CA237093DA CA237093A CA 237093 A CA237093 A CA 237093A CA 237093 A CA237093 A CA 237093A CA 237093D A CA237093D A CA 237093DA CA 237093 A CA237093 A CA 237093A
Authority
CA
Canada
Prior art keywords
controlled shutter
shutter
controlled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA237093A
Other languages
French (fr)
Inventor
Josiah Irving Frank
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IRVING ENGINEERING-SALES Co
Original Assignee
IRVING ENGINEERING-SALES Co
Publication date
Application granted granted Critical
Publication of CA237093A publication Critical patent/CA237093A/en
Expired legal-status Critical Current

Links

CA237093A Controlled shutter Expired CA237093A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA237093T

Publications (1)

Publication Number Publication Date
CA237093A true CA237093A (en) 1924-01-15

Family

ID=35141122

Family Applications (1)

Application Number Title Priority Date Filing Date
CA237093A Expired CA237093A (en) Controlled shutter

Country Status (1)

Country Link
CA (1) CA237093A (en)

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