Patent US21369A successfully refreshed from Google Patents.
US21369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
roome
Assignee: —
•
Filing: —
•
Granted: 1858-08-31
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Expires: 1875-08-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:56
CPC Classifications
A; A01; A01G; A01G3/00; A01G3/02; A01G3/025
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) | 1861-08-30 | 1862-03-01 | 1862-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1865-08-30 | 1866-03-01 | 1866-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1869-08-30 | 1870-03-01 | 1870-08-31 | $7700.00 | Window Closed / Lapsed |