US2103530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System of equalizing the lifting speed of differently loaded hydraulic jacks
Assignee: Maine Steel Corp
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Filing: 1935-09-05
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Granted: 1937-12-28
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Expires: 1955-09-05
Abstract
No abstract record available.
Inventors
- 👤 Carle D Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:42
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/20; E02F9/22; E02F9/2278; E02F9/2292; E02F9/2203; E02F9/2221; E02F9/2239; F; F15; F15B; F15B11/00; F15B11/16; F15B11/17
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) | 1940-12-27 | 1941-06-28 | 1941-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-12-27 | 1945-06-28 | 1945-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-12-27 | 1949-06-28 | 1949-12-28 | $7700.00 | Window Closed / Lapsed |