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3618935
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Information
Patent Grant
3618935
References
Source
Patent Number
3,618,935
Date Filed
Not available
Date Issued
Tuesday, November 9, 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
B31B2219/9045 - involving applying window patches
B31B2221/10 - the bags having no structural provision at the base for thickness of content
US Classifications
271 - Sheet feeding or delivering
198 - Conveyors: power-driven
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