Patent US3583198A successfully refreshed from Google Patents.
Patent US2569628A successfully refreshed from Google Patents.
US2569628A
Expired / Lapsed
US
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Demountable crane
Assignee: Safway Steel Products Inc
•
Filing: 1945-03-10
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Granted: 1951-10-02
•
Expires: 1965-03-10
Abstract
No abstract record available.
Inventors
- 👤 Philip B Craighead
- 👤 George H Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:56
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/36; B66C23/48
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |