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3815214
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Information
Patent Grant
3815214
References
Source
Patent Number
3,815,214
Date Filed
Not available
Date Issued
Tuesday, June 11, 1974
50 years ago
CPC
E03F5/021 - Connection of sewer pipes to manhole shaft
B28B7/168 - for holders or similar hollow articles
B28B23/0043 - with gaskets or sealing elements
E03F5/02 - Manhole shafts or other inspection chambers snow-filling openings accessories
F16L41/002 - of concrete, cement or asbestos-cement
Y10T29/4987 - Elastic joining of parts
US Classifications
029 - Metal working
249 - Static molds
264 - Plastic and nonmetallic article shaping or treating: processes
285 - Pipe joints or couplings
405 - Hydraulic and earth engineering
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