Patent US851331A successfully refreshed from Google Patents.
US851331A
Expired / Lapsed
US
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Compound roofing-sheet.
Assignee: BARBER ASPHALT PAVING Co
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Filing: 1906-01-23
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Granted: 1907-04-23
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Expires: 1926-01-23
Abstract
No abstract record available.
Inventors
- 👤 Henry R Wardell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:37
CPC Classifications
D; D06; D06N; D06N7/00; D06N7/0005; D06N7/0028; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31815; Y10T428/31819; Y10T442/00; Y10T442/50; Y10T442/51; Y10T442/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1910-04-22 | 1910-10-22 | 1911-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-04-22 | 1914-10-22 | 1915-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-04-22 | 1918-10-22 | 1919-04-23 | $7700.00 | Window Closed / Lapsed |