Patent US667993A successfully refreshed from Google Patents.
US667993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for moving engines off dead-centers.
Assignee: Individual
•
Filing: 1900-05-19
•
Granted: 1901-02-12
•
Expires: 1920-05-19
Abstract
No abstract record available.
Inventors
- 👤 Clark F Rigby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:45
CPC Classifications
F; F02; F02N; F02N3/00; F02N3/02; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1542; Y10T74/1547; Y10T74/1548; Y10T74/155; Y10T74/1558; Y10T74/1565; Y10T74/1566; Y10T74/1568; Y10T74/1569; Y10T74/18; Y10T74/18056; Y10T74/18144
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1904-02-12 | 1904-08-13 | 1905-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-02-12 | 1908-08-13 | 1909-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-02-12 | 1912-08-13 | 1913-02-12 | $7700.00 | Window Closed / Lapsed |