Robert Grinstead

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Chisago City, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Stair system for vehicle
- Patent number 12,233,818
- Issue date Feb 25, 2025
- Opus Mach LLC
- Deepak Kapur
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Universal chassis frame with variable rear axle positions for mediu...
- Patent number 12,005,958
- Issue date Jun 11, 2024
- Zeus Electric Chassis, Inc.
- Robert L. Grinstead
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Stair system for vehicle
- Patent number 11,951,947
- Issue date Apr 9, 2024
- Opus Mach LLC
- Deepak Kapur
- B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
UNIVERSAL CHASSIS FRAME FOR MEDIUM-DUTY CONFIGURABLE ELECTRIC TRUCKS
- Publication number 20240208315
- Publication date Jun 27, 2024
- Zeus Electric Chassis, Inc.
- Robert L. Grinstead
- B60 - VEHICLES IN GENERAL
Information Patent Application
OPTIMIZED AC POWERED AUXILLIARY UNITS FOR MEDIUM/HEAVY DUTY CONFIGU...
- Publication number 20230202280
- Publication date Jun 29, 2023
- Zeus Electric Chassis, Inc.
- Robert L. Grinstead
- B60 - VEHICLES IN GENERAL
Information Patent Application
UNIVERSAL CHASSIS FRAME WITH VARIABLE REAR AXLE POSITIONS FOR MEDIU...
- Publication number 20230202566
- Publication date Jun 29, 2023
- Zeus Electric Chassis, Inc.
- Robert L. Grinstead
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Application
Stair System For Vehicle
- Publication number 20230114575
- Publication date Apr 13, 2023
- Opus Mach LLC
- Deepak KAPUR
- B60 - VEHICLES IN GENERAL
Information Patent Application
Stair System For Vehicle
- Publication number 20220134957
- Publication date May 5, 2022
- Opus Mach LLC
- Deepak Kapur
- B60 - VEHICLES IN GENERAL