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US2391881A
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Crane controlling system
Assignee: Individual
•
Filing: 1944-06-03
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Granted: 1946-01-01
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Expires: 1964-06-03
Abstract
No abstract record available.
Inventors
- 👤 Murray G Clay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:32
CPC Classifications
H; H01; H01H; H01H25/00; B; B66; B66C; B66C13/00; B66C13/52; B66C13/54; B66C13/56; B66C2700/00; B66C2700/08; B66C2700/085; G; G05; G05G; G05G9/00; G05G9/02; G05G9/04; G05G9/047; G05G2009/04703; G05G2009/04722; G05G2009/0474; G05G2009/04744; Y; Y10; Y10S; Y10S414/00; Y10S414/122; Y10T; Y10T29/00; Y10T29/51; Y10T29/5196
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) | 1948-12-31 | 1949-07-02 | 1950-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-31 | 1953-07-02 | 1954-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-31 | 1957-07-02 | 1958-01-01 | $7700.00 | Window Closed / Lapsed |