Classifying – separating – and assorting solids – Sifting – Special applications
Patent
1977-12-14
1979-07-31
Halper, Robert
Classifying, separating, and assorting solids
Sifting
Special applications
209417, 209414, B07B 102
Patent
active
041629671
ABSTRACT:
An archaeological sifting basket is disclosed for use at the site of an archaeological dig, said basket comprising a frame, with wire mesh screen attached. The basket is hinged to be collapsible and has a bottom wall made up of two planar areas arranged at an angle to each other for increased flexibility of use.
REFERENCES:
patent: 277278 (1883-05-01), Henninger
patent: 660994 (1900-10-01), Mastin
patent: 725172 (1903-04-01), Taylor
patent: 2545226 (1951-03-01), Claude
patent: 2642836 (1953-06-01), Brooks
patent: 2793788 (1951-05-01), Lysne
patent: 4000577 (1977-01-01), Kelley
Halper Robert
Hokanson Jon
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