Patent US323725A successfully refreshed from Google Patents.
US79950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in double-acting hinges
Assignee: —
•
Filing: —
•
Granted: 1868-07-14
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Expires: 1885-07-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:29
CPC Classifications
E; E05; E05D; E05D11/00; E05D11/10; E05D11/1014; E05D11/1007; E05D3/00; E05D3/06; E05D3/12; E05F; E05F5/00; E05F5/02; E05F5/04; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
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) | 1871-07-14 | 1872-01-13 | 1872-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1875-07-14 | 1876-01-13 | 1876-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1879-07-14 | 1880-01-13 | 1880-07-14 | $7700.00 | Window Closed / Lapsed |