Patent US21077A successfully refreshed from Google Patents.
US21077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
byman
Assignee: —
•
Filing: —
•
Granted: 1858-08-03
•
Expires: 1875-08-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:08
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/04; D21B1/12; D21B1/30; D21B1/36
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1861-08-02 | 1862-02-01 | 1862-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1865-08-02 | 1866-02-01 | 1866-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1869-08-02 | 1870-02-01 | 1870-08-03 | $7700.00 | Window Closed / Lapsed |