Toilet ventilating apparatus
United States Patent 3357029
US Patent References:
/1207605.html
- - 1207605

Toilet bowl
- - 1549871


Inventors:
Walter, Schulz
Publication Date:
12/12/1967
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Assignee:
Walter, Schulz
Primary Class:
4/217
International Classes:
E03D9/052; E03D9/04
Foreign References:
IT445105B