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Patent applications and USPTO patent grants for Barthold; Michael J..The latest application filed is for "radio apparatus head-protective helmet".
Patent | Date |
---|---|
Radio apparatus head-protective helmet Grant 6,298,249 - Locarno , et al. October 2, 2 | 2001-10-02 |
Head-protective helmet and assemblies thereof Grant 6,032,297 - Barthold , et al. March 7, 2 | 2000-03-07 |
Crown pad and head-protective helmet Grant 5,996,126 - Barthold , et al. December 7, 1 | 1999-12-07 |
Combination head and eye-protective apparatus and goggles Grant 5,937,439 - Barthold , et al. August 17, 1 | 1999-08-17 |
Head-protective helmet mounting member for mounting helmet components together and head band Grant 5,898,949 - Barthold , et al. May 4, 1 | 1999-05-04 |
Combination head and eye-protective apparatus and goggles Grant 5,845,341 - Barthold , et al. December 8, 1 | 1998-12-08 |
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