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Spiral staircase |
| D282103 |
Spiral staircase
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| Patent Drawings: | |
| Inventor: |
Gregoire |
| Date Issued: |
January 7, 1986 |
| Application: |
06/481,785 |
| Filed: |
April 4, 1983 |
| Inventors: |
Gregoire; Raymond (Stoneham, MA)
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| Assignee: |
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| Primary Examiner: |
Word; A. Hugo |
| Assistant Examiner: |
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| Attorney Or Agent: |
Hamilton, Brook, Smith & Reynolds |
| U.S. Class: |
D25/63 |
| Field Of Search: |
52/187; D25/62; D25/63 |
| International Class: |
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| U.S Patent Documents: |
D273231; 3513547 |
| Foreign Patent Documents: |
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| Other References: |
Designing Staircases by Willbald Mannes, c. 1974, p. 17, FIG. 3.6.3.. |
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| Abstract: |
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| Claim: |
The ornamental design for a spiral staircase, substantially as shown and described. |
| Description: |
FIG. 1 is a front elevation of a spiral staircase displaying the face of lowest step;
FIG. 2 is a right side elevation showing the upper landing of the spiral staircase;
FIG. 3 is a left side elevation showing the back section of the spiral staircase;
FIG. 4 is a rear elevation of the spiral staircase 180.degree. opposed to the view presented in FIG. 1;
FIG. 5 is a top plan view of the spiral staircase;
FIG. 6 is a bottom plan view of the spiral staircase;
FIG. 7 is a front perspective view of the spiral staircase.
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