Stepped (12) Patents (Class D25/63)
Ladder (Class D25/64)
  • Exercise walkway
    Patent number: 4580777
    Abstract: An exercise walkway has a pair of aligned stairways that are arranged end to end and have a horizontal section therebetween so that a person may walk up one and down the other. Each stairway has a central handrail and the stairs on either side of it are of differing height and length so that a user may select which side he wishes to use of the walkway.
    Type: Grant
    Filed: June 22, 1984
    Date of Patent: April 8, 1986
    Inventor: Darrell M. Johnson
  • Boat steps
    Patent number: D243854
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: March 29, 1977
    Inventor: Donald A. Pelkey
  • External battery compartment with incorporated step for a tractor
    Patent number: D440984
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: April 24, 2001
    Inventor: Paul W. Norfleet
  • Spiral staircase
    Patent number: D251805
    Type: Grant
    Filed: May 19, 1977
    Date of Patent: May 8, 1979
    Inventor: Thomas R. Allmand
  • Portable multiple-toilet building
    Patent number: D262997
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: February 9, 1982
    Inventor: William A. Reynolds
  • Stair for a swimming pool
    Patent number: D265131
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: June 22, 1982
    Inventors: Ronald C. Wallin, Wesley A. Wallin
  • Stair for a swimming pool
    Patent number: D265250
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: June 29, 1982
    Inventors: Ronald C. Wallin, Wesley A. Wallin
  • Swimming pool ladder
    Patent number: D265251
    Type: Grant
    Filed: July 24, 1980
    Date of Patent: June 29, 1982
    Inventors: James W. Darby, David L. Darby
  • Tripod ladder
    Patent number: D267817
    Type: Grant
    Filed: August 20, 1979
    Date of Patent: February 1, 1983
    Inventor: Roger G. Garrett
  • Entrance staircase for mobile homes and the like
    Patent number: D270004
    Type: Grant
    Filed: March 2, 1981
    Date of Patent: August 2, 1983
    Inventors: Francis L. Struben, Jean C. Struben
  • Interchangeable entrance staircase for mobile homes and the like
    Patent number: D270286
    Type: Grant
    Filed: August 20, 1981
    Date of Patent: August 23, 1983
    Inventors: Francis L. Struben, Jean C. Struben
  • Deck skirting for portable spa
    Patent number: D270567
    Type: Grant
    Filed: May 22, 1981
    Date of Patent: September 13, 1983
    Assignee: Conlin Hot Tubs/Spas
    Inventor: Michael L. Conlin
  • Spiral stairway
    Patent number: D271524
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: November 22, 1983
    Inventor: Abraham Suckno
  • Helicopter step
    Patent number: D276603
    Type: Grant
    Filed: February 13, 1980
    Date of Patent: December 4, 1984
    Inventors: Robert B. McNab, David W. Kent, James A. Wolfe
  • Spiral staircase
    Patent number: D282103
    Type: Grant
    Filed: April 4, 1983
    Date of Patent: January 7, 1986
    Inventor: Raymond Gregoire
  • Hydraulic step
    Patent number: D341665
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: November 23, 1993
    Inventors: William H. Lee, Gerald A. Burden
  • Step ladder
    Patent number: D351476
    Type: Grant
    Filed: November 17, 1992
    Date of Patent: October 11, 1994
    Assignee: Grosfillex Sarl
    Inventor: Raymond Grosfillex
  • Stairs for swimming pool
    Patent number: D372985
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: August 20, 1996
    Inventor: Jean Bourgault
  • Staircase
    Patent number: D399975
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: October 20, 1998
    Assignee: Confer Plastics Inc.
    Inventor: Raymond C. Confer
  • Three-way staircase therapeutic device
    Patent number: D428629
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: July 25, 2000
    Assignee: Hausmann Industries, Inc.
    Inventor: Charles Cohen
  • Spa step
    Patent number: D430679
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: September 5, 2000
    Assignee: Jeremiah Rodgers
    Inventor: Jeremiah Rodgers