Patent US3750166A successfully refreshed from Google Patents.
Patent US134117A successfully refreshed from Google Patents.
US134117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in pitmen
Assignee: —
•
Filing: —
•
Granted: 1872-12-17
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Expires: 1889-12-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:03
CPC Classifications
F; F16; F16C; F16C7/00; F16C7/04; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2142; Y10T74/2144
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) | 1875-12-17 | 1876-06-17 | 1876-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1879-12-17 | 1880-06-17 | 1880-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1883-12-17 | 1884-06-17 | 1884-12-17 | $7700.00 | Window Closed / Lapsed |