Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5176320 | Device and method for measuring and controlling the water content in man made snow | Robert Kraus | 1993-01-05 |
| 4915302 | Device for making artificial snow | Robert Kraus | 1990-04-10 |
| 4793554 | Device for making artificial snow | Robert Kraus | 1988-12-27 |
| 4759503 | Device for making artificial snow | Robert Kraus | 1988-07-26 |
| 4246890 | Passive solar heater fluid pump system | Robert Kraus | 1981-01-27 |
| 4221115 | Altitude gas pressure differential power plant | Robert Kraus | 1980-09-09 |
| 4182124 | Gravity augmented air compression turbine power plant | Robert Kraus | 1980-01-08 |