CA447757A - Structure de masque - Google Patents

Structure de masque

Info

Publication number
CA447757A
CA447757A CA447757A CA447757DA CA447757A CA 447757 A CA447757 A CA 447757A CA 447757 A CA447757 A CA 447757A CA 447757D A CA447757D A CA 447757DA CA 447757 A CA447757 A CA 447757A
Authority
CA
Canada
Prior art keywords
mask structure
mask
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
CA447757A
Other languages
English (en)
Inventor
H. Bulbulian Arthur
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 CA447757A publication Critical patent/CA447757A/fr
Expired legal-status Critical Current

Links

CA447757A Structure de masque Expired CA447757A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA447757T

Publications (1)

Publication Number Publication Date
CA447757A true CA447757A (fr) 1948-04-13

Family

ID=35565440

Family Applications (1)

Application Number Title Priority Date Filing Date
CA447757A Expired CA447757A (fr) Structure de masque

Country Status (1)

Country Link
CA (1) CA447757A (fr)

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