Headwall structure for drainage conduit
Quin September 4, 2
U.S. patent number D447,544 [Application Number D/129,203] was granted by the patent office on 2001-09-04 for headwall structure for drainage conduit. Invention is credited to Donald S. Quin.
| United States Patent | D447,544 |
| Quin | September 4, 2001 |
Headwall structure for drainage conduit
Claims
The ornamental design for a headwall structure for drainage conduit, as shown and described.
| Inventors: | Quin; Donald S. (Victoria, B.C., CA) |
|---|---|
| Appl. No.: | D/129,203 |
| Filed: | September 7, 2000 |
Foreign Application Priority Data
| Mar 20, 2000 [CA] | 2000-0762 | |||
| Current U.S. Class: | D23/259 |
| Current International Class: | 2301 |
| Field of Search: | ;D23/259 ;405/124,125,40,87 ;404/2 |
References Cited [Referenced By]
U.S. Patent Documents
| D180410 | June 1957 | Mowbray |
| D277696 | February 1985 | Doman et al. |
| D292934 | November 1987 | Alberico |
| D379850 | June 1997 | Nelson |
| 1620089 | March 1927 | Fischer |
| 2041267 | May 1936 | Schroeder |
| 3779021 | December 1973 | Green |
| 4723871 | February 1988 | Roscoe |
| 4993872 | February 1991 | Lockwood |
| 5836717 | November 1998 | Bernini |
| 5971663 | October 1999 | Brothers |
Other References
|
Langley Concrete Group, Type II Headwall Structure, Specifications Drawing, Nov. 1998, 1 page, Victoria, Canada. . Langley Concrete Group, 16-20 Headwall Structure, Specifications Drawing, Nov. 1998, 1 page, Victoria, Canada.. |
Primary Examiner: Taylor; Robin V.
Attorney, Agent or Firm: Klarquist Sparkman Campbell Leigh & Whinston, LLP
Description
The FIGURE shown is a front, side perspective view of a headwall structure for drainage conduit showing my new design.
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