US2811262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double hook type crane structure
Assignee: NORTHERN ENGINEERING WORKS
•
Filing: 1953-06-09
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Granted: 1957-10-29
•
Expires: 1973-06-09
Abstract
No abstract record available.
Inventors
- 👤 Daniel A Schaitberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:31
CPC Classifications
B; B66; B66C; B66C13/00; B66C2700/00; B66C2700/01; B66C2700/012; B66C2700/017
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US198383A
Cited
US386934A
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US1334892A
Cited
US681275A
Cited
US1446303A
Cited
US1995298A
Cited
US2063914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |