CA210986A - Collapsible annular core - Google Patents

Collapsible annular core

Info

Publication number
CA210986A
CA210986A CA210986A CA210986DA CA210986A CA 210986 A CA210986 A CA 210986A CA 210986 A CA210986 A CA 210986A CA 210986D A CA210986D A CA 210986DA CA 210986 A CA210986 A CA 210986A
Authority
CA
Canada
Prior art keywords
annular core
collapsible annular
collapsible
core
annular
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
CA210986A
Other languages
French (fr)
Inventor
E. Welton Park
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA210986A publication Critical patent/CA210986A/en
Expired legal-status Critical Current

Links

CA210986A Collapsible annular core Expired CA210986A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA210986T

Publications (1)

Publication Number Publication Date
CA210986A true CA210986A (en) 1921-04-26

Family

ID=35104765

Family Applications (1)

Application Number Title Priority Date Filing Date
CA210986A Expired CA210986A (en) Collapsible annular core

Country Status (1)

Country Link
CA (1) CA210986A (en)

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