Combination lift insert and weld plate for use in hollow core concrete planks

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Information

Patent Grant
D272517

References
Source

Patent Number
D272,517
Date Filed
Monday, June 15, 1981
43 years ago
Date Issued
Tuesday, February 7, 1984
40 years ago

Inventors
- Richard R. Koehn
Original Assignees
- Fabcon, Inc.
Examiners
- Bullock; B. J.

US Classifications
- D08 - Tools and hardware
- D25 - Building units and construction elements
Field of Search
- US
- D08 300
- D08 313
- D08 384
- D08 349
- D08 354
- 052 1252
- 052 1254
- 052 1256
- 294 86 H
- 294 137
- D25 98
International Classifications
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a combination lift insert and weld plate for use in hollow core concrete planks, as shown and described.

US Referenced Citations (5)

Number	Name	Date	Kind
2886370	Lichert	May 1959
3187694	Crookston et al.	Jun 1965
3259086	Stein	Jul 1966
4262951	Hoyer	Apr 1981
4304431	Walston	Dec 1981

Non-Patent Literature Citations (1)

Entry
Twin City Testing and Engineering Laboratory, Load Test of Prestressed Concrete Plank End Lifter System, Dec. 14, 1978.