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Patent applications and USPTO patent grants for Frieder, JR.; Leonard P..The latest application filed is for "helmet impact attenuation article".
Patent | Date |
---|---|
Helmet Impact Attenuation Article App 20220007773 - Frieder, JR.; Leonard P. ;   et al. | 2022-01-13 |
Helmet impact attenuation article Grant 11,089,832 - Frieder, Jr. , et al. August 17, 2 | 2021-08-17 |
Helmet Impact Attenuation Article App 20180140037 - Frieder, JR.; Leonard P. ;   et al. | 2018-05-24 |
Rimless spectacles and method for making the same Grant 6,752,893 - Frieder, Jr. June 22, 2 | 2004-06-22 |
Local external communication device for enclosed helmet and mask assembly Grant 4,374,301 - Frieder, Jr. February 15, 1 | 1983-02-15 |
Custom-fitted helmet and method of making same Grant 4,345,338 - Frieder, Jr. , et al. August 24, 1 | 1982-08-24 |
Headset having double-coil earphone Grant 4,132,861 - Frieder, Jr. , et al. January 2, 1 | 1979-01-02 |
Sound attenuating earcup assembly provided with receivers and contact microphone Grant 4,087,653 - Frieder, Jr. , et al. May 2, 1 | 1978-05-02 |
Protective helmet assembly with segmental outer shell Grant 4,023,209 - Frieder, Jr. , et al. May 17, 1 | 1977-05-17 |
Simplified protective helmet assembly Grant 3,994,023 - Aileo , et al. November 30, 1 | 1976-11-30 |
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