United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 47
desired surface. 7. In a sieve, a foraminous material con-stituting the sieve proper, and means carriedthereby and confining to an annular spacethe material deposited by said sieve. In testimony whereof we have signed thisspecification in the presence of two subscrib-ing witnesses. WILLIAM HELM… … \b * Y\<£. Y\$L
Phonograph · Patents
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