Patent US2828640A successfully refreshed from Google Patents.
Patent US48311A successfully refreshed from Google Patents.
US48311A
Expired / Lapsed
US
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Improved mode of preparing roofing material
Assignee: —
•
Filing: —
•
Granted: 1865-06-20
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Expires: 1882-06-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:29
CPC Classifications
B; B32; B32B; B32B27/00; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1722; Y10T156/1727; Y10T156/1729; Y10T428/00; Y10T428/31504; Y10T428/31815; Y10T428/31819
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) | 1868-06-19 | 1868-12-19 | 1869-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1872-06-19 | 1872-12-19 | 1873-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1876-06-19 | 1876-12-19 | 1877-06-20 | $7700.00 | Window Closed / Lapsed |