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US2756019A
Expired / Lapsed
US
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Hydraulic or pneumatic form lifter
Assignee: Individual
•
Filing: 1953-04-22
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Granted: 1956-07-24
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Expires: 1973-04-22
Abstract
No abstract record available.
Inventors
- 👤 Heidenstam Erik Johan Von
- 👤 Lindman Emrik Ivar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:31
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/06; E04G11/20; E04G11/22; E04G11/24; E02; E02B; E02B17/00; E02B17/04; E02B17/08; E02B17/0836; E02B17/0854
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) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |