Document Type and Number:
United States Patent 3123446

Publication Date:
03/03/1964
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Referenced by:
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Primary Class:
428/593
Other Classes:
29/896.620, 428/601, 428/596, 210/496
International Classes:
B21F27/18; B64C21/04; B64C21/06; B21F27/00; B64C21/00
US Patent References:
1071822
2082513Filter sieve and art of making the same
2271662Filtering element and new method for its manufacture
2327184Filter body
2485827Propeller for aircraft
2711828Plastic fabric filter
2925650Method of forming perforate metal sheets
Foreign References:
GB3245924A




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