Patent US922A successfully refreshed from Google Patents.
US922A
Expired / Lapsed
US
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Improvement in plows
Assignee: —
•
Filing: —
•
Granted: 1838-09-15
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Expires: 1855-09-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:04
CPC Classifications
A; A01; A01B; A01B3/00; A01B3/04; A01B3/06; A01B3/08
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) | 1841-09-14 | 1842-03-16 | 1842-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1845-09-14 | 1846-03-16 | 1846-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1849-09-14 | 1850-03-16 | 1850-09-15 | $7700.00 | Window Closed / Lapsed |