Patent US45619A successfully refreshed from Google Patents.
US45619A
Expired / Lapsed
US
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Improvement in rings for stopping leaks in boiler-tubes
Assignee: —
•
Filing: —
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Granted: 1864-12-27
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Expires: 1881-12-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:54
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/16; F16L55/162; F16L55/165; F16L55/1651
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) | 1867-12-27 | 1868-06-27 | 1868-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1871-12-27 | 1872-06-27 | 1872-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1875-12-27 | 1876-06-27 | 1876-12-27 | $7700.00 | Window Closed / Lapsed |