Patent US2613431A successfully refreshed from Google Patents.
US2613431A
Expired / Lapsed
US
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Method of making hydraulic cylinders with plungers
Assignee: Individual
•
Filing: 1948-03-22
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Granted: 1952-10-14
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Expires: 1968-03-22
Abstract
No abstract record available.
Inventors
- 👤 Leland T Mcgee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:05
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/4927; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927
Claims Analysis
Total Claims: 0
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Cited
US1722389A
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US1836798A
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US1998047A
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US2001204A
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US2018392A
Cited
US2155180A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |