US2643472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulldozer
Assignee: Individual
•
Filing: 1949-09-12
•
Granted: 1953-06-30
•
Expires: 1969-09-12
Abstract
No abstract record available.
Inventors
- 👤 John W Merz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:46
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7622; E02F3/7627
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1460440A
Cited
US2160596A
Cited
US2173158A
Cited
US2219159A
Cited
US2218512A
Cited
US2410543A
Cited
US2450200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |