DR. THOMAS GORMAN ALLEN, M.D.
Radiology at Arden Rd, Pasadena, CA
License number
California A20128
Category
Medical Practice
Type
Specialist
License number
California A20128
Category
Radiology
Type
Diagnostic Radiology
Address
Address
1155 Arden Rd, Pasadena, CA 91106
Phone
(626) 792-7666
(626) 577-7974 (Fax)
(626) 577-7974 (Fax)
Personal information
See more information about THOMAS GORMAN ALLEN at radaris.comName
Address
Phone
506 S Main St Apt D, Ukiah, CA 95482
4 Scarborough Way, Rancho Mirage, CA 92270
5244 Lewison Ct, San Diego, CA 92120
515 Fremont St, Upland, CA 91784
Professional information
See more information about THOMAS GORMAN ALLEN at trustoria.com
Dr. Thomas G Allen, Pasadena CA - MD (Doctor of Medicine)
Dr. Thomas G Allen, Pasadena CA - MD (Doctor of Medicine)
Specialties:
Radiology
Address:
1155 Arden Rd, Pasadena 91106
(626) 792-7666 (Phone), (626) 577-7974 (Fax)
(626) 792-7666 (Phone), (626) 577-7974 (Fax)
Certifications:
Radiology
Awards:
Healthgrades Honor Roll
Languages:
English
Education:
Medical School
University Of Southern California / School Of Medicine
Los Angeles County-U S C Medical Center
University Of Southern California / School Of Medicine
Los Angeles County-U S C Medical Center
Telephone Call Screener
Telephone Call Screener
US Patent:
4429188, Jan 31, 1984
Filed:
Jun 15, 1981
Appl. No.:
6/273618
Inventors:
Thomas E. Allen - Pasadena CA
International Classification:
H04M 166
US Classification:
179 84C
Abstract:
A telephone call screener discriminates between desired and undesired incoming telephone calls. Desired calls are signaled by use of a two-digit code known only to persons selected by the user. The first digit of the code refers to the number of silence gaps between calling tones or rings that the calling party has to wait before entering a second digit of the code from one of the ten numbers on the touch tone or rotary dial on the telephone used to place the call. An incoming call is first detected and electronically answered, after which the output of a sine wave generator is periodically transmitted over the open telephone line to generate false calling tones simulating the periodic audible ringing sequence of a conventional telephone. An enabling circuit detects the correct code being signaled only during the proper silence gap in the false calling tone sequence. Either a touch tone decoder circuit or a rotary dial detector circuit is enabled to generate an output for activating a transducer, such as a bell or a light, to indicate that the desired call has been received.