Safety system
Patent 4003152 Issued on January 18, 1977. Estimated Expiration Date: 
January 18, 1994. 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.
January 18, 1994. 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 1076530 3400393 3553877 3673725 3725939 InventorsAssigneeApplicationNo. 620357 filed on 10/07/1975US Classes:42/70.01, SAFETY MECHANISM42/70.11Firearm lockExaminersPrimary: Jordan, Charles T.Attorney, Agent or FirmAbstractNormally disabled electrical and mechanical devices are caused to be enabled to operate by remote control signals having predetermined distinctive characteristics, such signals originating from enabling control equipment transported by an authorized person or persons. Receiving equipment providing output enabling signals only in response to received signals having the predetermined distinctive characteristics is preferably made integral with the mechanical or electrical devices involved and is coupled through appropriate electronic or electro-mechanical devices to the disabling means in the mechanical or electrical devices to be enabled.Field of SearchELECTRIC APPLIANCES | |
