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US 4,790,474 AGranted
Document file
OwnerMasuhiro Mitsuyamainventor
Life of this patent
Estimating the term…
Abstract
An improved document file is proposed which has a pair of covers, a plurality of bag members laminated one upon another, and a plurality of reinforcing padding members mounted in pocket-like or sheaths spaces formed between the adjoining bag members. The padding members serve to eliminate any difficulty in opening the compartments formed by the bag members, due to limpness of the material of which the bag members are made.
Claims4
A document file comprising:
- a plurality of upwardly opening compartments attached together in accordion-like fashion;
- a plurality of pocket-like sheaths defined between adjacent ones of said plurality of compartments for receiving a reinforcing padding member;
- and
- a plurality of reinforcing padding members removably inserted into said plurality of pocket-like sheaths for reinforcing and keeping open each compartment of said plurality of upwardly opening compartments.
1 more element
Dependencies are inferred from the claim text.