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3557666
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Information
Patent Grant
3557666
References
Source
Patent Number
3,557,666
Date Filed
Not available
Date Issued
Tuesday, January 26, 1971
53 years ago
CPC
B31B21/00 - Machinery characterised by making rectangular envelopes or bags of flat form, i.e. without structural provision at the base for thickness of contents, from sheets or blanks
B31B1/56 - by rotary members co-operating with blades
B31B19/26 - and having means for folding sheets, blanks, or webs
B31B2201/2679 - by rotary members co-operating with blades
B31B2219/2672 - involving transversely folding
B31B2221/10 - the bags having no structural provision at the base for thickness of content
US Classifications
493 - Manufacturing container or tube from paper
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