Patent US2567681A successfully refreshed from Google Patents.
US2567681A
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US
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Hydraulic jack
Assignee: Individual
•
Filing: 1947-02-14
•
Granted: 1951-09-11
•
Expires: 1967-02-14
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Schwartz
- 👤 John P Mcdonald
- 👤 Stanley H Mcdonald
- 👤 Thomas J Mcdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:32
CPC Classifications
B; B66; B66F; B66F3/00; B66F3/24; B66F3/245; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20738
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1349801A
Cited
DE335461C
Cited
US1590849A
Cited
US1664579A
Cited
US1709000A
Cited
GB286998A
Cited
US1880732A
Cited
US1745067A
Cited
US1869687A
Cited
CH153904A
Cited
US1954558A
Cited
US2100564A
Cited
US2121861A
Cited
CH199626A
Cited
US2213285A
Cited
US2359060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |