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Patent US154297A successfully refreshed from Google Patents.
US154297A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in metallic roofings
Assignee: —
•
Filing: —
•
Granted: 1874-08-18
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Expires: 1891-08-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:15
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/7407; E04B2/7453; E04B2/7457
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) | 1877-08-17 | 1878-02-16 | 1878-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1881-08-17 | 1882-02-16 | 1882-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1885-08-17 | 1886-02-16 | 1886-08-18 | $7700.00 | Window Closed / Lapsed |