Diaphragm unit and method of fabricating same
United States Patent 2529862
US Patent References:
/0008575.html
- - 0008575

/0117393.html
- - 0117393

/0301068.html
- - 0301068

Sounding board
- - 1747307

Process for treating cellulosic material
- - 1888419


Inventors:
Bilhuber, Paul H.
Publication Date:
11/14/1950
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Assignee:
STEINWAY & SONS
Primary Class:
34/255
Other Classes:
201/19, 192/105C, 84/452R, 219/773, 84/192
International Classes:
G10C9/00
US Patent References:
2042145Process of evaporating and equipment therefor
2231457Electrical apparatus
2320474Drying of porous masses
2325652Drying method
2360108High-frequency desiccator
2360604Process for the partial pyrolysis of wood and product of the same
Foreign References:
GB475631A