Folding stage riser

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Information

Patent Grant
D307186

References
Source

Patent Number
D307,186
Date Filed
Friday, November 6, 1987
37 years ago
Date Issued
Tuesday, April 10, 1990
34 years ago

Inventors
- Orley David Rogers
- Kenneth Edward Staten
Original Assignees
- Stageright Corporation
Examiners
- Burke; Wallace R.
- Clark; Doris
Agents
- Barnes, Kisselle, Raisch, Choate, Whittemore & Hulbert

US Classifications
- D25 - Building units and construction elements
Field of Search
- US
- D25 62
- D25 63
- D25 65
- D25 66
- D25 68
- D25 69
- 052 690
- 052 694
- 052 8
- 052 9
- 182 113
- 182 152
- 182 159
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a folding stage riser, as shown.

US Referenced Citations (3)

Number	Name	Date	Kind
D216787	Sorenson	Mar 1970
3747706	Paine et al.	Jul 1973
4011695	Simmons, Sr.	Mar 1977