US2512552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure vessel assembly
Assignee: Cardox Corp
•
Filing: 1945-08-29
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Granted: 1950-06-20
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Expires: 1965-08-29
Abstract
No abstract record available.
Inventors
- 👤 Harry B Quarfoot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:37
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/22; B60P3/224; B60P3/2265; B60P3/2205; F; F17; F17C; F17C3/00; F17C3/02; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/03; F17C2201/035; F17C2203/00; F17C2203/01; F17C2203/014; F17C2203/015; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0626; F17C2203/0629; F17C2205/00; F17C2205/01; F17C2205/0153; F17C2205/0157; F17C2205/0161; F17C2205/03; F17C2205/0302; F17C2205/0352; F17C2205/0364; F17C2209/00; F17C2221/00; F17C2221/01; F17C2221/013; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033; F17C2270/00; F17C2270/07; F17C2270/0754
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1316949A
Cited
US1228378A
Cited
US1452487A
Cited
US1730153A
Cited
US1879392A
Cited
GB367589A
Cited
US2025789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-19 | 1953-12-19 | 1954-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-19 | 1957-12-19 | 1958-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-19 | 1961-12-19 | 1962-06-20 | $7700.00 | Window Closed / Lapsed |