Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 7604018 | Dispensers An inline dispersal valve that can be used with or without a base. One embodiment includes a rotatable member that is rotatable from a fluid stream obstructing condition to an out-of-the-way condition to prevent fluid diversion into the dispersal valve. Another embo... | 10/20/2009 |
| D571432 | Dispenser holder | 06/17/2008 |
| 7347935 | Combination inline dispenser and non-fitted cartridge An inline dispenser and purification device combination comprising an inline dispenser having fluid ports directly mateable to the ports of a fitted cartridge and a universal cartridge having no ports for connection with the fluid ports of the inline dispenser and a... | 03/25/2008 |
| 7347934 | Biocide A two part biocide composition containing metal ions and bromine donor for killing microorganisms in a body of water and a method of killing microorganisms in a body of water by placing both metal ions and a bromine in the body of water to allow use of lower concent... | 03/25/2008 |
| 7335299 | Dual filter A dual filter apparatus and a process of making a dual filter apparatus that minimizes disruption to the normal flow pattern through the filter apparatus by forming a porous medium suitable to carry a fluid activator and placing an activator proximate the porous fil... | 02/26/2008 |
| 7168574 | Dual filter A dual filter apparatus and a process of making a dual filter apparatus that minimizes disruption to the normal flow pattern through the filter apparatus by forming a porous medium suitable to carry a fluid activator and placing an activator proximate the porous fil... | 01/30/2007 |
| 7048864 | Dendrimer fluid purification system and method A dendrimer complex comprising a dendrimer and an antimicrobial agent with the dendrimer complex placeable directly into a fluid to inhibit growth of microbes or rid the fluid of microbes. In a further embodiment of the invention the dendrimer complex is secured to ... | 05/23/2006 |
| 7014780 | Stand alone water purifier system A water treatment device, method and system with the water treatment device having a container for holding a water treatment material therein with the water treatment device including a shroud extending in a direction generally normal to a flow of debris laden water... | 03/21/2006 |
| 6948510 | Dose system An apparatus and method for delivering both quick dispensing water treatment materials and slow dispensing water treatment materials from the same dispensing unit by dispensing the slow dispensing water treatment materials over an extended period of time and the qui... | 09/27/2005 |