Manhole step
Latest M.A. INDUSTRIES, INC. Patents:
Description
The broken lines in the drawings denote environmental structure that form no part of the claimed design.
Claims
The ornamental design for a manhole step, as shown and described.
Referenced Cited
U.S. Patent Documents
4100997 | July 18, 1978 | Peacock |
4610330 | September 9, 1986 | Borst |
4655318 | April 7, 1987 | Bowen |
4869342 | September 26, 1989 | Borst |
D304376 | October 31, 1989 | Robertson |
5944140 | August 31, 1999 | Takahashi |
5967256 | October 19, 1999 | Takahashi |
6068083 | May 30, 2000 | Takahashi |
D429002 | August 1, 2000 | Takahashi |
D429003 | August 1, 2000 | Takahashi |
6125967 | October 3, 2000 | Takahashi |
D435118 | December 12, 2000 | Takahashi |
D452742 | January 1, 2002 | Takahashi |
D490907 | June 1, 2004 | Peacock et al. |
D556917 | December 4, 2007 | Peacock |
Patent History
Patent number: D839451
Type: Grant
Filed: Oct 17, 2017
Date of Patent: Jan 29, 2019
Assignee: M.A. INDUSTRIES, INC. (Peachtree City, GA)
Inventor: Kenneth John Chlopecki (Mechanicville, NY)
Primary Examiner: Cynthia Ramirez
Assistant Examiner: Gino Colan
Application Number: 29/622,421
Type: Grant
Filed: Oct 17, 2017
Date of Patent: Jan 29, 2019
Assignee: M.A. INDUSTRIES, INC. (Peachtree City, GA)
Inventor: Kenneth John Chlopecki (Mechanicville, NY)
Primary Examiner: Cynthia Ramirez
Assistant Examiner: Gino Colan
Application Number: 29/622,421
Classifications
Current U.S. Class:
Stair Tread, Step Or Ladder Rung (D25/69)