CA569173A - Closure device for apertures - Google Patents

Closure device for apertures

Info

Publication number
CA569173A
CA569173A CA569173A CA569173DA CA569173A CA 569173 A CA569173 A CA 569173A CA 569173 A CA569173 A CA 569173A CA 569173D A CA569173D A CA 569173DA CA 569173 A CA569173 A CA 569173A
Authority
CA
Canada
Prior art keywords
apertures
closure device
closure
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
CA569173A
Other languages
French (fr)
Inventor
B. Glaser Leo
Frank A. Votta, Jr.
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.)
EASTERN METALS RESEARCH Co
Original Assignee
EASTERN METALS RESEARCH Co
Publication date
Application granted granted Critical
Publication of CA569173A publication Critical patent/CA569173A/en
Expired legal-status Critical Current

Links

CA569173A Closure device for apertures Expired CA569173A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA569173T

Publications (1)

Publication Number Publication Date
CA569173A true CA569173A (en) 1959-01-20

Family

ID=35741712

Family Applications (1)

Application Number Title Priority Date Filing Date
CA569173A Expired CA569173A (en) Closure device for apertures

Country Status (1)

Country Link
CA (1) CA569173A (en)

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