2169428

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Information

Patent Grant
2169428

References
Source

Patent Number
2,169,428
Date Filed
Not available
Date Issued
Tuesday, August 15, 1939
86 years ago

CPC
- E04D5/04 - by making use of metal foils
- E04D12/00 - Non-structural supports for roofing materials
US Classifications
- 052 - Static structures

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