Two sided manhole step
Latest M.A. Industries, Inc. Patents:
Description
Portions or features of the two sided manhole step shown in broken lines in the drawings form no part of the claimed design.
Claims
I claim the ornamental design for a two sided manhole step, as shown and described.
Referenced Cited
U.S. Patent Documents
Other references
2064803 | December 1936 | Grove |
2650032 | August 1953 | Godfrey |
3867864 | February 1975 | Knohl |
4100997 | July 18, 1978 | Peacock |
4610330 | September 9, 1986 | Borst |
4655318 | April 7, 1987 | Bowen |
4778032 | October 18, 1988 | Takahashi |
4842784 | June 27, 1989 | Takahashi |
4869342 | September 26, 1989 | Borst |
D304376 | October 31, 1989 | Robertson |
5507600 | April 16, 1996 | Takahashi |
5752579 | May 19, 1998 | Takahashi |
5772358 | June 30, 1998 | Takahashi |
5944140 | August 31, 1999 | Takahashi |
5967256 | October 19, 1999 | Takahashi |
6029772 | February 29, 2000 | 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 |
6302618 | October 16, 2001 | Takahashi |
D452742 | January 1, 2002 | Takahashi |
D462453 | September 3, 2002 | Johansson |
6589037 | July 8, 2003 | Takahashi |
D490907 | June 1, 2004 | Peacock et al. |
- Occupational Safety and Health Administration, 20 C.F.R. Section 1910.27(b)(1)(v).
- M.A. Industries, Inc. Manhole Step Brochure, Aug. 1991, illustrating an actual size photo of M.A. Step model PS-1-PF.
Patent History
Patent number: D556917
Type: Grant
Filed: Apr 3, 2007
Date of Patent: Dec 4, 2007
Assignee: M.A. Industries, Inc. (Peachtree City, GA)
Inventors: Bobbie Don Peacock (Peachtree City, GA), Charles McInvale (Newnan, GA)
Primary Examiner: Doris Clark
Attorney: Kilpatrick Stockton LLP
Application Number: 29/285,595
Type: Grant
Filed: Apr 3, 2007
Date of Patent: Dec 4, 2007
Assignee: M.A. Industries, Inc. (Peachtree City, GA)
Inventors: Bobbie Don Peacock (Peachtree City, GA), Charles McInvale (Newnan, GA)
Primary Examiner: Doris Clark
Attorney: Kilpatrick Stockton LLP
Application Number: 29/285,595
Classifications
Current U.S. Class:
Stair Tread, Step Or Ladder Rung (D25/69)