US1860375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety lowering device
Assignee: Box Crane & Hoist Corp
•
Filing: 1930-12-06
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Granted: 1932-05-31
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Expires: 1950-12-06
Abstract
No abstract record available.
Inventors
- 👤 Frank J Winterer
- 👤 Arthur E Hogrebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:43
CPC Classifications
B; B66; B66D; B66D1/00; B66D1/02; B66D1/14; B66D1/04; B66D1/06
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) | 1935-05-31 | 1935-11-30 | 1936-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-05-31 | 1939-11-30 | 1940-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-05-31 | 1943-11-30 | 1944-05-31 | $7700.00 | Window Closed / Lapsed |