Patent US2631552A successfully refreshed from Google Patents.
US2631552A
Expired / Lapsed
US
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Aluminum shingle
Assignee: Individual
•
Filing: 1950-01-09
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Granted: 1953-03-17
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Expires: 1970-01-09
Abstract
No abstract record available.
Inventors
- 👤 Louis J Korter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:28
CPC Classifications
E; E04; E04D; E04D1/00; E04D1/29; E04D1/2907; E04D1/2949; E04D1/2914; E04D1/2918; E04D1/2942
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US220181A
Cited
US303921A
Cited
US1406757A
Cited
US1763870A
Cited
US1971517A
Cited
US2173774A
Cited
US2243256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |