Patent US3458786A successfully refreshed from Google Patents.
US218128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in the manufacture of metal rings
Assignee: —
•
Filing: —
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Granted: 1879-08-05
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Expires: 1896-08-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:05
CPC Classifications
B; B25; B25D; B25D7/00; Y; Y10; Y10S; Y10S277/00; Y10S277/922; Y10S277/924; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49274; Y10T29/49279
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) | 1882-08-04 | 1883-02-03 | 1883-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1886-08-04 | 1887-02-03 | 1887-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1890-08-04 | 1891-02-03 | 1891-08-05 | $7700.00 | Window Closed / Lapsed |