US2837846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic clamshell bucket
Assignee: Individual
•
Filing: 1953-09-21
•
Granted: 1958-06-10
•
Expires: 1973-09-21
Abstract
No abstract record available.
Inventors
- 👤 Daniel L Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:36
CPC Classifications
B; B66; B66C; B66C3/00; B66C3/14; B66C3/16; E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/413
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US476750A
Cited
US552810A
Cited
US805228A
Cited
US870812A
Cited
US1180303A
Cited
US1400922A
Cited
US2674385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |