US153784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in valve-motions
Assignee: —
•
Filing: —
•
Granted: 1874-08-04
•
Expires: 1891-08-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:17
CPC Classifications
B; B25; B25D; B25D9/00; B25D9/14; B25D9/16; B25D9/20
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) | 1877-08-03 | 1878-02-02 | 1878-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1881-08-03 | 1882-02-02 | 1882-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1885-08-03 | 1886-02-02 | 1886-08-04 | $7700.00 | Window Closed / Lapsed |