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Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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US Patent 5022068 - Branched telephone system
US Patent Issued on June 4, 1991
Estimated Patent Expiration Date:
June 4, 2008Estimated 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.
Estimated Patent Expiration Date:
June 4, 2008Estimated 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.AbstractA branched telephone system having a plurality of telephones which are connected to a single subscriber line or to single radio apparatus functions to establish a priority set condition in which the communicating function of particular one of the telephones is validated to prevent the other telephones from being used, and further includes the function of automatically cancelling such a priority set condition. | InventorsAssigneeApplicationNo. 162878 filed on 03/02/1988US Classes:455/463, Multi-users379/184, Lockout379/185Portable or mobileField of Search379/168, Lockout379/184, Lockout379/161, With exclusion or priority feature (e.g., lockout or privacy)379/185Portable or mobileExaminersPrimary: Dwyer, James L.Attorney, Agent or FirmUS Patent References3435151, 4000375, Automatic call transfer circuit for a plurality of telephonesIssued on: 12/28/1976 Inventor: Kawamura4075434, Key telephone privacy exclusion apparatus Issued on: 02/21/1978 Inventor: Merritt, Jr.4640987, Cordless telephone Issued on: 02/03/1987 Inventor: Tsukada , et al.4650931, Cordless telephone Issued on: 03/17/1987 Inventor: Tsukada , et al.4691338, Line switching circuit for cordless telephone Issued on: 09/01/1987 Inventor: Makino4718080, Microprocessor controlled interface for cellular system Issued on: 01/05/1988 Inventor: Serrano , et al.4745632, Wireless mobile telephone communication system Issued on: 05/17/1988 Inventor: Duffy4747128, Telephone privacy protector Issued on: 05/24/1988 Inventor: Chan , et al.4748685Mobile radio communications system Issued on: 05/31/1988 Inventor: Rozanski, Jr. International ClassH04Q 007/04Foreign Application Priority Data1987-03-05 JP |
