Copyright © Philip M. Parker, INSEAD. Terms of Use.

| Year | Description |
| 1997 | Invention patented by Dennis Crabtree on December 15th, 1997. Abstract: An improved additive eductor for supplying additives, including foam concentrates and thixotropic foam concentrates, into a hand line or waterline for supplying a nozzle used for fire fighting operations wherein the additive eductor can be operated in either eductive or non-eductive by-pass mode and further comprising in a prefered embodiment a back-flow preventative metering valve attached to a additive port. |
| Source: selected by the editor from original sources. | |
Copyright © Philip M. Parker, INSEAD. Terms of Use.