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Patent US193641A successfully refreshed from Google Patents.
US193641A
Expired / Lapsed
US
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Improvement in manufacture of blanks for harrow-teeth
Assignee: —
•
Filing: —
•
Granted: 1877-07-31
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Expires: 1894-07-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:14
CPC Classifications
B; B21; B21D; B21D13/00; B21D13/04
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) | 1880-07-30 | 1881-01-29 | 1881-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1884-07-30 | 1885-01-29 | 1885-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1888-07-30 | 1889-01-29 | 1889-07-31 | $7700.00 | Window Closed / Lapsed |