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3304572
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Information
Patent Grant
3304572
References
Source
Patent Number
3,304,572
Date Filed
Not available
Date Issued
Tuesday, February 21, 1967
57 years ago
CPC
A47L11/40 - Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups
A47L11/20 - combined with vacuum cleaning devices
A47L11/4013 - Contaminants collecting devices
A47L11/4025 - Means for emptying
A47L11/403 - Means for monitoring filtering operation
A47L11/4033 - Means for cleaning filters
A47L11/4044 - Vacuuming or pick-up tools; Squeegees
A47L11/4075 - Handles; levers
A47L11/4094 - Accessories to be used in combination with conventional vacuum-cleaning devices
E01H1/0854 - Apparatus in which the mechanically dislodged dirt is partially sucked-off
US Classifications
015 - Brushing, scrubbing, and general cleaning
096 - Gas separation: apparatus
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