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US1614979A
Expired / Lapsed
US
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Drag-line-excavator counterbalance
Assignee: Individual
•
Filing: 1926-01-11
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Granted: 1927-01-18
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Expires: 1946-01-11
Abstract
No abstract record available.
Inventors
- 👤 Harvey S Cole
- 👤 Norman A Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:31
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/62; B66C23/72; B66C2700/00; B66C2700/03; B66C2700/0392
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1930-01-17 | 1930-07-19 | 1931-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-01-17 | 1934-07-19 | 1935-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-01-17 | 1938-07-19 | 1939-01-18 | $7700.00 | Window Closed / Lapsed |