Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6520750 | Pumping apparatus with extendable drawing pipe and impeller and impeller hydraulic drive means supplied by a hydraulic hose carried by a segmented hydraulic hose support | Dana Eller, Darren J. Eller | 2003-02-18 |
| 6447260 | Extendable mobile pumping apparatus | Dana Eller, Daren J. Eller | 2002-09-10 |
| 6210125 | Water system with both electric motor power and manual pedal power, for a reciprocating pump | Dana Eller, Daren J. Eller | 2001-04-03 |
| 5772405 | Water system with a pedal powered reciprocating pump | — | 1998-06-30 |
| 5564706 | Practice putting green | Brian S. Clark | 1996-10-15 |
| 5254040 | Handball - squash court conversion system | Jack L. Cosby | 1993-10-19 |
| D334700 | Drill jig | — | 1993-04-13 |
| 4208978 | Lateral thruster for a water vessel | — | 1980-06-24 |
| 4188788 | Hydraulic turbine system | — | 1980-02-19 |