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Patent US1899901A successfully refreshed from Google Patents.
US1899901A
Expired / Lapsed
US
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Crowding and racking-in mechanism for excavator cranes
Assignee: TEMPLE SLAG Co
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Filing: 1932-03-29
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Granted: 1933-02-28
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Expires: 1952-03-29
Abstract
No abstract record available.
Inventors
- 👤 Stephen N Nickliss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:03
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/20; E02F9/2016
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) | 1936-02-28 | 1936-08-29 | 1937-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-02-28 | 1940-08-29 | 1941-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-02-28 | 1944-08-29 | 1945-02-28 | $7700.00 | Window Closed / Lapsed |