US2760283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock pulling device
Assignee: Individual
•
Filing: 1952-01-15
•
Granted: 1956-08-28
•
Expires: 1972-01-15
Abstract
No abstract record available.
Inventors
- 👤 Ingfred S Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:32
CPC Classifications
A; A01; A01D; A01D43/00; A01B; A01B43/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US22215A
Cited
CA462183A
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US799258A
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US851732A
Cited
US1676040A
Cited
US1844124A
Cited
US1969684A
Cited
US2128602A
Cited
US2310526A
Cited
US2475146A
Cited
US2624959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |