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Patent US2708374A successfully refreshed from Google Patents.
US2708374A
Expired / Lapsed
US
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Screw lifting jack with lubricating chamber sealed at both ends
Assignee: Individual
•
Filing: 1952-12-29
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Granted: 1955-05-17
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Expires: 1972-12-29
Abstract
No abstract record available.
Inventors
- 👤 Casper H Engh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:52
CPC Classifications
B; B66; B66F; B66F3/00; B66F3/08; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/956; Y10S411/96; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18712; Y10T74/18744
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) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |