Removable RAM package for ambulatory medical monitor
Patent 4592018 Issued on May 27, 1986. Estimated Expiration Date: 
August 29, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 29, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3898631 Logic board interlock indication apparatus Removable memory package, associated apparatus and method of use Patent #: 4502130 InventorAssigneeApplicationNo. 06/527453 filed on 08/29/1983US Classes:365/63, INTERCONNECTION ARRANGEMENTS307/328, Interlock323/911, MEDICAL ELECTRONICS365/195, Inhibit365/226, POWERING600/485, Measuring pressure in heart or blood vessel600/509Detecting heartbeat electric signalExaminersPrimary: Moffitt, James W.Assistant: Gossage, Glenn Attorney, Agent or FirmInternational ClassesG06F 19/00 (20060101)G06F 17/40 (20060101) AbstractA removable package for use primarily in an ambulatory monitoring device, such as a medical monitor includes a RAM and a power supply. The RAM package is connected to an external device via an edge connector which includes interlock means for sensing when the removable RAM package is properly connected to the external device in order to prevent inadvertent writes into the RAM. In a preferred embodiment of the invention disclosed, the removable RAM circuit also includes a microprocessor compatible real time timer which is connected to the same data and address buses as the RAM.Other References
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