Mark Eisen's practice has included
Software
Business Methods
Transformers and Power Distribution
Motors and Generators
Audio-video Broadcasting and Distribution Equipment
Telecommunications and Satellite Communications
Robotics
Medical Equipment
Biomagnetics
Opto-electronics
PVD and CVD Coating Equipment
Security Systems
Remote Controls
HVAC Systems
Automobile Accessories
Natural Gas Vehicles
Hydraulic Cylinders
Injection Molding Machines
Automated Banking Machines
Lighting
Sorting Systems
Displays and Shelving
Storage Systems
Jacks and Hoists
Water Containment Structures
Living Spaces
Furniture
Tools
Recycling and Purification Systems
Dental Appliances and Equipment
Vending Equipment
Sporting Equipment
Clothing and Footwear
Household Products and Utensils