Portable half-step stairway unit
Johnson December 16, 1
U.S. patent number D287,283 [Application Number 06/534,338] was granted by the patent office on 1986-12-16 for portable half-step stairway unit. Invention is credited to Paul R. Johnson.
| United States Patent | D287,283 |
| Johnson | December 16, 1986 |
Portable half-step stairway unit
Claims
The ornamental design for a portable half-step stairway unit, substantially as shown and described.
| Inventors: | Johnson; Paul R. (Milton, MA) |
|---|---|
| Family ID: | 41693166 |
| Appl. No.: | 06/534,338 |
| Filed: | September 21, 1983 |
| Current U.S. Class: | D25/69; 182/228.1; D25/65 |
| Current CPC Class: | E04F11/0201 20130101 |
| Field of Search: | ;182/120,228,106 ;D6/449,450,349 ;D34/45,43 ;D9/418,432 ;D25/68,69,87 ;52/184,183,188,189 |
References Cited [Referenced By]
U.S. Patent Documents
| D150031 | June 1948 | Richards |
| 567985 | September 1896 | Clair |
| 2044260 | June 1936 | Schiele |
| 2730412 | January 1956 | Yoder |
| 3381775 | May 1968 | Livers |
| 4113161 | September 1978 | Manuszak |
Attorney, Agent or Firm: Mrose; James E.
Description
FIG. 1 is a perspective view of a portable half-step stairway unit showing my new design;
FIG. 2 is a further perspective view thereof, on a reduced scale, together with broken lines representing an associated stairway and other like units shown for illustrative purposes in relation to environmental structure and not being part of my claimed design;
FIG. 3 is a front elevational view thereof, the rear elevational view thereof being the same;
FIG. 4 is a side elevational view thereof, looking toward the right side thereof as it appears in FIG. 1, the side elevational view looking toward the left side thereof being the same; and
FIG. 5 is a top plan view thereof; the bottom plan view thereof being the same.
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