Patent US3950737A successfully refreshed from Google Patents.
Patent US80943A successfully refreshed from Google Patents.
US80943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Henry greenfield
Assignee: —
•
Filing: —
•
Granted: 1868-08-11
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Expires: 1885-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:42
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/40; D21H21/44; D21H21/46; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24835
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) | 1871-08-11 | 1872-02-10 | 1872-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1875-08-11 | 1876-02-10 | 1876-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1879-08-11 | 1880-02-10 | 1880-08-11 | $7700.00 | Window Closed / Lapsed |