US2938360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anhydrous ammonia storage tank
Assignee: Chemical Construction Corp
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Filing: 1957-12-23
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Granted: 1960-05-31
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Expires: 1977-12-23
Abstract
No abstract record available.
Inventors
- 👤 Christensen Axel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:23
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/02; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/03; F17C2201/032; F17C2201/05; F17C2201/052; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033; F17C2227/00; F17C2227/01; F17C2227/0128; F17C2227/0135; F17C2227/0142; F17C2227/0171; F17C2227/0185; F17C2260/00; F17C2260/03; F17C2260/031; F17C2260/04; F17C2260/042; F17C2265/00; F17C2265/02; F17C2265/025; F17C2265/03; F17C2265/032; F17C2265/033; F17C2265/034; F17C2265/037
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2059942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |