Patents Assigned to The Marshall Telephone Corporation Limited
  • Telephone
    Patent number: D275568
    Type: Grant
    Filed: December 23, 1981
    Date of Patent: September 18, 1984
    Assignee: The Marshall Telephone Corporation Limited
    Inventor: Eric J. Marshall
  • Telephone
    Patent number: D275853
    Type: Grant
    Filed: December 23, 1981
    Date of Patent: October 9, 1984
    Assignee: The Marshall Telephone Corporation Limited
    Inventor: Eric J. Marshall
  • Telephone
    Patent number: D276157
    Type: Grant
    Filed: December 4, 1981
    Date of Patent: October 30, 1984
    Assignee: The Marshall Telephone Corporation Limited
    Inventor: Eric J. Marshall
  • Telephone instrument set
    Patent number: D276692
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: December 11, 1984
    Assignee: The Marshall Telephone Corporation Limited
    Inventor: Eric J. Marshall
  • Telephone
    Patent number: D276721
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: December 11, 1984
    Assignee: The Marshall Telephone Corporation Limited
    Inventor: Eric J. Marshall
  • Handset telephone instrument
    Patent number: D276723
    Type: Grant
    Filed: January 15, 1982
    Date of Patent: December 11, 1984
    Assignee: The Marshall Telephone Corporation Limited
    Inventor: Eric J. Marshall
  • Telephone
    Patent number: D278052
    Type: Grant
    Filed: December 4, 1981
    Date of Patent: March 19, 1985
    Assignee: The Marshall Telephone Corporation Limited
    Inventor: Eric J. Marshall
  • Telephone
    Patent number: D279894
    Type: Grant
    Filed: October 21, 1982
    Date of Patent: July 30, 1985
    Assignee: The Marshall Telephone Corporation Limited
    Inventor: Eric J. Marshall
  • Telephone
    Patent number: D282840
    Type: Grant
    Filed: December 9, 1983
    Date of Patent: March 4, 1986
    Assignee: The Marshall Telephone Corporation Limited
    Inventor: Eric J. Marshall
  • Telephone set
    Patent number: D284571
    Type: Grant
    Filed: December 9, 1983
    Date of Patent: July 8, 1986
    Assignee: The Marshall Telephone Corporation Limited
    Inventor: Eric J. Marshall
  • Telephone set
    Patent number: D284657
    Type: Grant
    Filed: December 9, 1983
    Date of Patent: July 15, 1986
    Assignee: The Marshall Telephone Corporation Limited
    Inventor: Eric J. Marshall
  • Telephone set
    Patent number: D287850
    Type: Grant
    Filed: March 2, 1984
    Date of Patent: January 20, 1987
    Assignee: The Marshall Telephone Corporation Limited
    Inventor: Eric J. Marshall