Patent US2688428A successfully refreshed from Google Patents.
US2688428A
Expired / Lapsed
US
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Stored pressure medium container
Assignee: Worcester Pressed Steel Co
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Filing: 1950-01-19
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Granted: 1954-09-07
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Expires: 1970-01-19
Abstract
No abstract record available.
Inventors
- 👤 Manhartsberger Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:50
CPC Classifications
F; F17; F17C; F17C7/00; F17C13/00; F17C13/04; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/05; F17C2201/058; F17C2203/00; F17C2203/06; F17C2203/0634; F17C2203/0636; F17C2203/0639; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0311; F17C2205/032; F17C2223/00; F17C2223/01; F17C2223/0107; F17C2223/0123; F17C2270/00; F17C2270/07; F17C2270/0772
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1045629A
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US1100433A
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CH154586A
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US2035004A
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US2061641A
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US2073292A
Cited
US2206818A
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US2407754A
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US2580639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |