CA1315135C - Rondelle pour fixation de couche isolante de couverture - Google Patents
Rondelle pour fixation de couche isolante de couvertureInfo
- Publication number
- CA1315135C CA1315135C CA000616013A CA616013A CA1315135C CA 1315135 C CA1315135 C CA 1315135C CA 000616013 A CA000616013 A CA 000616013A CA 616013 A CA616013 A CA 616013A CA 1315135 C CA1315135 C CA 1315135C
- Authority
- CA
- Canada
- Prior art keywords
- washer
- protrusion
- head
- flange
- aperture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US840,152 | 1986-03-17 | ||
US06/840,152 US4663910A (en) | 1986-03-17 | 1986-03-17 | Washer for roofing insulation |
US07/014,878 US4757661A (en) | 1986-03-17 | 1987-02-17 | Washer with axial ribs |
US014,878 | 1987-02-17 | ||
CA000531603A CA1294158C (fr) | 1986-03-17 | 1987-03-10 | Rondelle pour isolant de couverture |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000531603A Division CA1294158C (fr) | 1986-03-17 | 1987-03-10 | Rondelle pour isolant de couverture |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1315135C true CA1315135C (fr) | 1993-03-30 |
Family
ID=27167682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000616013A Expired - Lifetime CA1315135C (fr) | 1986-03-17 | 1991-02-28 | Rondelle pour fixation de couche isolante de couverture |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA1315135C (fr) |
-
1991
- 1991-02-28 CA CA000616013A patent/CA1315135C/fr not_active Expired - Lifetime
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKLA | Lapsed | ||
MKEC | Expiry (correction) |
Effective date: 20121205 |