Patent US3449845A successfully refreshed from Google Patents.
US3449845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earthmoving scraper bowl suspension with safety features
Assignee: Caterpillar Inc
•
Filing: 1966-12-15
•
Granted: 1969-06-17
•
Expires: 1986-12-15
Abstract
No abstract record available.
Inventors
- 👤 Henry J Jessen
- 👤 John A Junck
- 👤 Roger A Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:52
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/6454; E02F3/65; E02F3/652; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86509
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2815223A
Cited
US3118686A
Cited
US3321216A
Cited
US3304633A
Cited
US3299547A
Cited
US3250526A
Cited
US3311389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |