US63797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
of watkins
Assignee: —
•
Filing: —
•
Granted: 1867-04-16
•
Expires: 1884-04-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:30
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/24; F16L37/244; F16L37/252; F23; F23J; F23J13/00; F23J13/04; F23J2213/00; F23J2213/20; F23J2213/202
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) | 1870-04-15 | 1870-10-15 | 1871-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1874-04-15 | 1874-10-15 | 1875-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1878-04-15 | 1878-10-15 | 1879-04-16 | $7700.00 | Window Closed / Lapsed |