Patent US3455070A successfully refreshed from Google Patents.
US3455070A
Expired / Lapsed
US
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Roofing panel with interlocking edges
Assignee: ALLMANNA STALELEMENT AB
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Filing: 1967-12-04
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Granted: 1969-07-15
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Expires: 1987-12-04
Abstract
No abstract record available.
Inventors
- 👤 Per Wiklund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:04
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/20; E04B7/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US403844A
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US1882105A
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US2142305A
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US2209816A
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US2744589A
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US3062337A
Cited
US3243929A
Cited
US3267626A
Cited
US3320708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |