Patent US2593643A successfully refreshed from Google Patents.
US2593643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switch control mechanism
Assignee: Joy Manufacturing Co
•
Filing: 1948-12-30
•
Granted: 1952-04-22
•
Expires: 1968-12-30
Abstract
No abstract record available.
Inventors
- 👤 James W Woolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:50
CPC Classifications
E; E21; E21F; E21F13/00; E21F13/02; E21F13/025; E21F13/06; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20006; Y10T74/20207; Y10T74/20213; Y10T74/20576; Y10T74/20888; Y10T74/209; Y10T74/20906
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US539863A
Cited
US591210A
Cited
US1310757A
Cited
US809773A
Cited
US1428460A
Cited
US1646419A
Cited
US1611957A
Cited
US2386706A
Cited
US2350063A
Cited
US2439356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |