Patent US2678508A successfully refreshed from Google Patents.
US2678508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable bulldozer
Assignee: Caterpillar Global Mining LLC
•
Filing: 1950-06-09
•
Granted: 1954-05-18
•
Expires: 1970-06-09
Abstract
No abstract record available.
Inventors
- 👤 Reuter Gottfried
- 👤 Barnes Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:56
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7609; E02F3/7613
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2173158A
Cited
US2238346A
Cited
US2429506A
Cited
US2408268A
Cited
US2529124A
Cited
US2452774A
Cited
US2485407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |