Patent US5380580A successfully refreshed from Google Patents.
Patent US2368345A successfully refreshed from Google Patents.
US2368345A
Expired / Lapsed
US
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Elevating screw
Assignee: Individual
•
Filing: 1943-12-06
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Granted: 1945-01-30
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Expires: 1963-12-06
Abstract
No abstract record available.
Inventors
- 👤 Clyde W Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:38
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; G; G01; G01N; G01N3/00; G01N3/40; G01N3/42; F16H2025/204; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18712; Y10T74/1872
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) | 1948-01-30 | 1948-07-31 | 1949-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-01-30 | 1952-07-31 | 1953-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-01-30 | 1956-07-31 | 1957-01-30 | $7700.00 | Window Closed / Lapsed |