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Tanken Seiko Corp. Patent Filings

Tanken Seiko Corp.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Tanken Seiko Corp..The latest application filed is for "mechanical face seal for sealing slurry liquid".

Company Profile
0.3.0
  • Tanken Seiko Corp. - Tokyo JP
*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.
Patent Activity
PatentDate
Mechanical face seal for sealing slurry liquid
Grant 4,545,588 - Nagai , et al. October 8, 1
1985-10-08
Sealing device for rotary shaft and string-like member for defining spiral therefor
Grant 4,463,957 - Nagai , et al. August 7, 1
1984-08-07
Mechanical seal
Grant 4,196,911 - Matsushita April 8, 1
1980-04-08

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