Patent US2728221A successfully refreshed from Google Patents.
US2728221A
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Apparatus for applying fluid pressure
Assignee: Individual
•
Filing: 1952-05-13
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Granted: 1955-12-27
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Expires: 1972-05-13
Abstract
No abstract record available.
Inventors
- 👤 Reuben G Klammer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:32
CPC Classifications
G; G01; G01M; G01M5/00; G01M5/0041; G01M5/005; F; F15; F15B; F15B11/00; F15B11/02; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20538; F15B2211/30; F15B2211/305; F15B2211/30525; F15B2211/31; F15B2211/3144; F15B2211/32; F15B2211/321; F15B2211/325; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053; F15B2211/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1650736A
Cited
US2173493A
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US2367009A
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US2344133A
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US2436317A
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US2472047A
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US2612038A
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US2624027A
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US2685794A
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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) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |