Patent US2434185A successfully refreshed from Google Patents.
US2434185A
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US
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Roof covering
Assignee: Republic Steel Corp
•
Filing: 1945-07-13
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Granted: 1948-01-06
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Expires: 1965-07-13
Abstract
No abstract record available.
Inventors
- 👤 Irving P Whitehouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:42
CPC Classifications
E; E04; E04D; E04D3/00; E04D3/35; E04D13/00; E04D13/15; E04D13/158; E04D13/1585; E04D3/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US720893A
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GB190314395A
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US942577A
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US1190081A
Cited
US1428169A
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US1519350A
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US1653847A
Cited
FR664865A
Cited
US1971932A
Cited
US2037560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-05 | 1951-07-07 | 1952-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-05 | 1955-07-07 | 1956-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-05 | 1959-07-07 | 1960-01-06 | $7700.00 | Window Closed / Lapsed |