Patent US8019A successfully refreshed from Google Patents.
US8019A
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US
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Improvement in machines for cutting screws on bedstead-rails
Assignee: —
•
Filing: —
•
Granted: 1851-04-01
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Expires: 1868-04-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:25
CPC Classifications
B; B23; B23B; B23B39/00; B23B39/16; B23B39/22; Y; Y10; Y10T; Y10T408/00; Y10T408/36; Y10T408/375; Y10T408/378
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) | 1854-03-31 | 1854-09-30 | 1855-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1858-03-31 | 1858-09-30 | 1859-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1862-03-31 | 1862-09-30 | 1863-04-01 | $7700.00 | Window Closed / Lapsed |