US2681231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Track-adjusting means for trench diggers and similar machines
Assignee: Individual
•
Filing: 1952-04-16
•
Granted: 1954-06-15
•
Expires: 1972-04-16
Abstract
No abstract record available.
Inventors
- 👤 Kondracki Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:04
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/084; E; E02; E02F; E02F9/00; E02F9/02; E02F9/024; Y; Y10; Y10S; Y10S180/00; Y10S180/906; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/32442; Y10T403/32451
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1319235A
Cited
DE570007C
Cited
US1203853A
Cited
US1374412A
Cited
US1447011A
Cited
US1710116A
Cited
USRE21106E
Cited
US2318802A
Cited
US2320601A
Cited
US2413355A
Cited
US2410271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-14 | 1957-12-14 | 1958-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-14 | 1961-12-14 | 1962-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-14 | 1965-12-14 | 1966-06-15 | $7700.00 | Window Closed / Lapsed |