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Herbert Allen and Madden T. Works received US Patent No. 2,444,216 on June 29, 1948, filed March 24, 1947.
The patent's description opens (from the scanned text):
This invention relates to seal assemblies and particularly to seal assemblies which may be employed in combination with the casing heads, casing and other equipment employed at the tops of wells.
- Author
- Herbert Allen; Madden T. Works
- Published by
- US Patent Office
- Series
- US Patent No. 2,444,216
- Date
- June 29, 1948
- Library no.
- ACL Doc 23280 · asbestosclaims.law/library/23280
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 4 pages · 414 KB
Where it was listed
- Asbestos, August 1948, in its patents department (the year's issues)
Cite this document
Herbert Allen, Madden T. Works. “Packing (US Patent 2,444,216, 1948).” June 29, 1948. US Patent No. 2,444,216. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23280. https://asbestosclaims.law/library/23280.
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