Patent US2853857A successfully refreshed from Google Patents.
US2853857A
Expired / Lapsed
US
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Fluid pressure unit
Assignee: Individual
•
Filing: 1954-03-08
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Granted: 1958-09-30
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Expires: 1974-03-08
Abstract
No abstract record available.
Inventors
- 👤 Macewka John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:32
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/30; B23K11/31; F; F15; F15B; F15B11/00; F15B11/02; F15B11/028; F15B11/036; F15B11/0365
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US446799A
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US825866A
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US1954427A
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US2151712A
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US2402343A
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US2593604A
Cited
US2692571A
Cited
US2698603A
Cited
US2661599A
Cited
US2642138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |