Patent US487939A successfully refreshed from Google Patents.
US487939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making butt-hinges
Assignee: —
•
Filing: —
•
Granted: 1892-12-13
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Expires: 1909-12-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:33
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/38; B21D53/40; Y; Y10; Y10T; Y10T29/00; Y10T29/24; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992
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) | 1895-12-13 | 1896-06-13 | 1896-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1899-12-13 | 1900-06-14 | 1900-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1903-12-14 | 1904-06-14 | 1904-12-14 | $7700.00 | Window Closed / Lapsed |