CA851278A - Dial-type telephone sets - Google Patents

Dial-type telephone sets

Info

Publication number
CA851278A
CA851278A CA851278A CA851278DA CA851278A CA 851278 A CA851278 A CA 851278A CA 851278 A CA851278 A CA 851278A CA 851278D A CA851278D A CA 851278DA CA 851278 A CA851278 A CA 851278A
Authority
CA
Canada
Prior art keywords
dial
telephone sets
type telephone
type
sets
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.)
Expired
Application number
CA851278A
Inventor
H. Ireland Rainseford
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.)
JOHN O BLICK
Original Assignee
JOHN O BLICK
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 JOHN O BLICK filed Critical JOHN O BLICK
Application granted granted Critical
Publication of CA851278A publication Critical patent/CA851278A/en
Expired 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
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/677—Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance numbers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
CA851278A 1968-04-01 1968-04-01 Dial-type telephone sets Expired CA851278A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA16379 1968-04-01

Publications (1)

Publication Number Publication Date
CA851278A true CA851278A (en) 1970-09-08

Family

ID=4084139

Family Applications (1)

Application Number Title Priority Date Filing Date
CA851278A Expired CA851278A (en) 1968-04-01 1968-04-01 Dial-type telephone sets

Country Status (2)

Country Link
US (1) US3555209A (en)
CA (1) CA851278A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50151405A (en) * 1974-05-25 1975-12-05

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358087A (en) * 1964-05-21 1967-12-12 Western Electric Co Telephone instrument dialing control device

Also Published As

Publication number Publication date
US3555209A (en) 1971-01-12

Similar Documents

Publication Publication Date Title
CA851278A (en) Dial-type telephone sets
CA792307A (en) Telephone set
CA800671A (en) Telephone switchhook
AU424026B2 (en) Telephone answering machines
CA920291A (en) Telephone dial
CA798942A (en) Hand telephone set
AU436036B2 (en) Telephone ringer
CA784960A (en) Telephone ringer
AU436064B2 (en) Telephone answering devices
CA801832A (en) Telephone extension system
CA782007A (en) Telephone answering system
CA776803A (en) Telephone system
CA792853A (en) Telephone system
AU419105B2 (en) Telephone dial mechanism
AU447569B2 (en) Telephone subset
AU447423B2 (en) Telephone subset
AU448355B2 (en) Telephone subset
AU5212969A (en) Telephone ringer
CA779701A (en) Telephone index devices
CA788027A (en) Telephone instruments
CA791231A (en) Telephone line circuit
CA791230A (en) Telephone line circuit
CA802337A (en) Telephone systems
CA792301A (en) Time division telephone signaling
CA800075A (en) Calling dial