US47304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in steam-traps
Assignee: —
•
Filing: —
•
Granted: 1865-04-18
•
Expires: 1882-04-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:20
CPC Classifications
F; F16; F16T; F16T1/00; F16T1/20; F16T1/32; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3021; Y10T137/304; Y10T137/3052; Y10T137/3056; Y10T137/3059; Y10T137/3068
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) | 1868-04-17 | 1868-10-17 | 1869-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1872-04-17 | 1872-10-17 | 1873-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1876-04-17 | 1876-10-17 | 1877-04-18 | $7700.00 | Window Closed / Lapsed |