US3307730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum pressure vessel
Assignee: DURALAST CONTAINERS Ltd
•
Filing: 1965-01-29
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Granted: 1967-03-07
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Expires: 1985-01-29
Abstract
No abstract record available.
Inventors
- 👤 Davidson John Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:51
CPC Classifications
F; F17; F17C; F17C1/00; F17C1/14; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/05; F17C2201/056; F17C2201/058; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0607; F17C2203/0612; F17C2203/0614; F17C2203/0619; F17C2203/0634; F17C2203/0636; F17C2203/0639; F17C2203/0646; F17C2203/0648; F17C2203/0658; F17C2203/0663; F17C2209/00; F17C2209/22; F17C2209/221; F17C2209/225; F17C2209/227; F17C2221/00; F17C2221/01; F17C2221/011; F17C2221/03; F17C2221/032; F17C2221/035; F17C2223/00; F17C2223/01; F17C2223/0107; F17C2223/0123; F17C2223/0146; F17C2223/0153; F17C2223/03; F17C2223/035; F17C2260/00; F17C2260/01; F17C2260/011; F17C2260/012; F17C2270/00; F17C2270/01; F17C2270/0186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US559968A
Cited
US3124001A
Cited
US2744043A
Cited
US3002534A
Cited
US3171563A
Cited
US3137405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |