Patent US2165891A successfully refreshed from Google Patents.
US47076A
Expired / Lapsed
US
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Improvement in fusible plugs for boilers
Assignee: —
•
Filing: —
•
Granted: 1865-03-28
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Expires: 1882-03-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:21
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/42; F22B37/47; F22B37/475; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/1812
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) | 1868-03-27 | 1868-09-26 | 1869-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1872-03-27 | 1872-09-26 | 1873-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1876-03-27 | 1876-09-26 | 1877-03-28 | $7700.00 | Window Closed / Lapsed |