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US84205A
Expired / Lapsed
US
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Improved sheet-metal roofing
Assignee: —
•
Filing: —
•
Granted: 1868-11-17
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Expires: 1885-11-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:29
CPC Classifications
G; G04; G04B; G04B15/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12708; Y10T428/12722; Y10T428/12771; Y10T428/12785; Y10T428/12792; Y10T428/12799; Y10T74/00; Y10T74/15; Y10T74/1502
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) | 1871-11-17 | 1872-05-18 | 1872-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1875-11-17 | 1876-05-18 | 1876-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1879-11-17 | 1880-05-18 | 1880-11-17 | $7700.00 | Window Closed / Lapsed |