Patent US71635A successfully refreshed from Google Patents.
US71635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in paper-clips
Assignee: —
•
Filing: —
•
Granted: 1867-12-03
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Expires: 1884-12-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:25
CPC Classifications
A; A41; A41H; A41H37/00; A41H37/04; B; B42; B42F; B42F9/00; B42F9/001; B42F9/002; B42F9/005; B42F13/00; B42F13/12; B42F13/14; Y; Y10; Y10T; Y10T24/00; Y10T24/20; Y10T24/202; Y10T24/203; Y10T24/204
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) | 1870-12-02 | 1871-06-03 | 1871-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1874-12-02 | 1875-06-03 | 1875-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1878-12-02 | 1879-06-03 | 1879-12-03 | $7700.00 | Window Closed / Lapsed |