CA2000978A1 - Shutter mechanism for telephone directory - Google Patents

Shutter mechanism for telephone directory

Info

Publication number
CA2000978A1
CA2000978A1 CA 2000978 CA2000978A CA2000978A1 CA 2000978 A1 CA2000978 A1 CA 2000978A1 CA 2000978 CA2000978 CA 2000978 CA 2000978 A CA2000978 A CA 2000978A CA 2000978 A1 CA2000978 A1 CA 2000978A1
Authority
CA
Canada
Prior art keywords
shutter mechanism
telephone directory
names
directory
sections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2000978
Other languages
French (fr)
Other versions
CA2000978C (en
Inventor
Gad Jacob Shaanan
George Victor Lenaerts
Ian Douglas Buchanan
Anthony Michael Smith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd
Priority to CA002000978A priority Critical patent/CA2000978C/en
Publication of CA2000978A1 publication Critical patent/CA2000978A1/en
Application granted granted Critical
Publication of CA2000978C publication Critical patent/CA2000978C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
    • H04M1/274—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

SHUTTER MECHANISM FOR TELEPHONE DIRECTORY
Abstract of the Disclosure A shutter mechanism for a telephone directory that stores telephone numbers to be dialled. The directory has physical spaces for the entry of descriptive labels (e.g.
names). The shutter mechanism has a first planar surface for providing these physical spaces. It has a second planar surface overlying the first surface. The second surface is divided into alternating opaque and transparent sections such that the surface having the names can be moved underneath the second surface such that the names can be hidden by the opaque sections or revealed by the transparent sections.
CA002000978A 1989-10-18 1989-10-18 Shutter mechanism for telephone directory Expired - Fee Related CA2000978C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002000978A CA2000978C (en) 1989-10-18 1989-10-18 Shutter mechanism for telephone directory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002000978A CA2000978C (en) 1989-10-18 1989-10-18 Shutter mechanism for telephone directory

Publications (2)

Publication Number Publication Date
CA2000978A1 true CA2000978A1 (en) 1991-04-18
CA2000978C CA2000978C (en) 1993-09-14

Family

ID=4143351

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002000978A Expired - Fee Related CA2000978C (en) 1989-10-18 1989-10-18 Shutter mechanism for telephone directory

Country Status (1)

Country Link
CA (1) CA2000978C (en)

Also Published As

Publication number Publication date
CA2000978C (en) 1993-09-14

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed