Title:
Roof structure
United States Patent 3245187
US Patent References:
/0154297.html
- - 0154297

/0186021.html
- - 0186021

/0302113.html
- - 0302113

/0422319.html
- - 0422319

/0618516.html
- - 0618516


Inventors:
David, May
Publication Date:
04/12/1966
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Assignee:
David, May
Primary Class:
52/478
Other Classes:
52/552, D25/56, 52/520, 52/536, 52/537
International Classes:
E04D3/362; E04D3/36
US Patent References:
1076065
1179523
1210855
2163381Self-locking building block
2308442Building construction
2378567Building structure
3114218Roofing structure
Foreign References:
DE189198C
GB190918541A
GB565883A