Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9388593 | Safety device for drain sump | Fallon Leigh McKain | 2016-07-12 |
| 9015873 | Drain sump | Pierce C. McKain | 2015-04-28 |
| 7213529 | Emergency sail system | — | 2007-05-08 |
| 6468052 | Vacuum relief device for fluid transfer and circulation systems | Mark Fritze | 2002-10-22 |
| 6171073 | Fluid vacuum safety device for fluid transfer and circulation systems | David Rizzi, Mark Fritze | 2001-01-09 |
| 5947700 | Fluid vacuum safety device for fluid transfer systems in swimming pools | David Rizzi, Mark Fritze | 1999-09-07 |
| 5369555 | Light emitting screwdriver | Mark Fritze | 1994-11-29 |