US3138357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gantry crane safety device
Assignee: JAMES SCOTT (ELECTRONIC ENGINEERING) Ltd
•
Filing: 1961-07-13
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Granted: 1964-06-23
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Expires: 1981-07-13
Abstract
No abstract record available.
Inventors
- 👤 Whitwell Arthur Leslie
- 👤 Williams Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:28
CPC Classifications
B; B66; B66C; B66C15/00; B66C15/04; B66C15/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |