Spring biased paper clip

Details Spring biased paper clip Spring biased paper clip

1995-11-24

1997-04-22

Cuomo, Peter M.

Buckles, buttons, clasps, etc.

Paper fastener

Resiliently biased

24 6711, 24565, 24566, B42F 102

Patent

active

056219504

ABSTRACT:
A spring-loaded paper clip has a pair of plate elements which are hingedly connected together and which are provided with raised projections to improve gripping force so that the clip can hold large quantities of paper together without slipping or shifting.

REFERENCES:
patent: 392394 (1888-11-01), Allderige
patent: 608092 (1898-07-01), Williams
patent: 1053725 (1913-02-01), Gates
patent: 2666240 (1954-01-01), Maccaferri
patent: 2827719 (1958-03-01), Nairn
patent: 3968546 (1976-07-01), Seaborn et al.
patent: 4014077 (1977-03-01), Hitchcock et al.
patent: 4023721 (1977-05-01), Erthein
patent: 4763389 (1988-08-01), Chang
patent: 4899974 (1990-02-01), Wear et al.

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