Leon Helfet

USPTO Trademark & Patent Filings

Leon Helfet

Trademark applications and grants for Leon Helfet. Leon Helfet has 2 trademark applications. The latest application filed is for "OPTICGRIPS"

Company Profile
    Company Aliases
  • Leon Helfet
  • helfet leon
  • Helfet; Leon - Camarillo CA
State Incorporated
Entity Type
Address 1539 San Rafael Way Camarillo, CALIFORNIA UNITED STATES 93012

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.
Trademarks Patents
Patent Applications
Patent ApplicationDate
Optic Retainer Hooks
20210191152 - 16/725973 Helfet; Leon ;   et al.
2021-06-24
Manual Litter Box
20110265728 - 13/179381 Cook; Alan Jay ;   et al.
2011-11-03
MANUAL LITTER BOX
20100095898 - 12/581080 Cook; Alan Jay ;   et al.
2010-04-22
Manual litter box
8,567,348 - 13/179,381 Cook , et al. October 29, 2
2013-10-29
Manual litter box
8,567,348 - 13/179,381 Cook , et al. October 29, 2
2013-10-29
Manual litter box
7,997,230 - 12/581,080 Cook , et al. August 16, 2
2011-08-16
Aquarium filter water return chamber
7,601,258 - 12/008,382 Helfet October 13, 2
2009-10-13
Aquarium filter unit
7,425,274 - 11/273,822 Helfet September 16, 2
2008-09-16
Patent Grants & Applications
Trademark Applications

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