Railroad hopper car cross ridge collar casting

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Information

Patent Grant
D311359

References
Source

Patent Number
D311,359
Date Filed
Thursday, February 18, 1988
37 years ago
Date Issued
Tuesday, October 16, 1990
34 years ago

Inventors
- Keith J. Hallam
- Kenneth K. SMITH
Original Assignees
- THRALL CAR MANUFACTURING COMPANY
Examiners
- Lucas; Susan J.
- Brown; Melody
Agents
- Marshall, O'Toole, Gerstein, Murray & Bicknell

US Classifications
- D12 - Transportation
Field of Search
- US
- D12 42
- D12 46
- 105 411
- 105 419
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a railroad hopper car cross ridge collar casting, as shown and described.

US Referenced Citations (4)

Number	Name	Date	Kind
22492	Brill	May 1893
1461732	Hart	Jul 1923
2060156	Wine	Nov 1936
3538857	Mowatt-Larssen	Nov 1970