US91767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in head-block for saw-mills
Assignee: —
•
Filing: —
•
Granted: 1869-06-22
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Expires: 1886-06-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:42
CPC Classifications
B; B27; B27B; B27B29/00; B27B29/08; B27B29/10; Y; Y10; Y10T; Y10T83/00; Y10T83/647; Y10T83/6492; Y10T83/6499; Y10T83/6508; Y10T83/6515; Y10T83/6518; Y10T83/6523; Y10T83/6532
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) | 1872-06-21 | 1872-12-21 | 1873-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1876-06-21 | 1876-12-21 | 1877-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1880-06-21 | 1880-12-21 | 1881-06-22 | $7700.00 | Window Closed / Lapsed |