Douglas Tonjes
Location: Flagler Beach, Florida United States
Company: Douglas Consulting and Eng
Profession: Engineer/Designer
Number of times previously entering contest: never
Hobbies and activities: Sailing, machine design
Inspired by: Practical need.
2012 Entries
| Date | Title | Category | Views | Votes |
|---|---|---|---|---|
| 07/01 | Compressed Air Storage Tank 10 lbs in a 5 lb Bag | Machinery & Equipment | 4478 | 0 |
| 07/01 | Power Glove Drill Like Having Another Hand | Consumer Products | 3769 | 0 |
| 07/01 | Energy Saving Air Conditioning Thermostat | Electronics | 3539 | 0 |
| 07/01 | Safe Inexpensive Solar Hot Water Heater | Sustainable Technologies | 3555 | 0 |
| 06/28 | Practical Commuter System Improves Safety while Reducing Costs | Transportation | 3707 | 0 |