US2543100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw and nut mechanism
Assignee: Individual
•
Filing: 1948-12-13
•
Granted: 1951-02-27
•
Expires: 1968-12-13
Abstract
No abstract record available.
Inventors
- 👤 Casper H Engh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:25
CPC Classifications
B; B66; B66F; B66F3/00; B66F3/08; F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/24; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19721
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) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |