Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 5971275 | System for verifying nuclear warhead prearm/safing signals A system for collecting, storing, and verifying the data pulse train for arm and safing of a nuclear warhead on a submarine using MK 63 or 67 torpedo tubes is provided. The components of the system include a notebook computer operating four software prog... | 10/26/1999 |
| 5877696 | Security system for warheads A weapons security system composed of containers for storage of warheads or warhead material. The containers are equipped to detect breaches in the enclosure walls and to transmit an alarm signal in the event of a breach. The alarm signal is received by a... | 03/02/1999 |
| 4046993 | Target for torpedo launch system A system for determining the proper instant of time to launch an object, h as a target or torpedo, from an aircraft to cause the object to impact a water surface at a predetermined nose-down angle, thereby preventing structural damage due to high impact ... | 09/06/1977 |
| 3938456 | Automatic steering system for a torpedo In an automatic steering system for directing a moving body, said system ng provided with reversibly-motorized depth steering gear including two motor reversing circuits, one, upon energization, setting said gear for climb and another, upon energization,... | 02/17/1976 |