US2903877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage tank structure
Assignee: Phillips Petroleum Co
•
Filing: 1956-09-12
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Granted: 1959-09-15
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Expires: 1976-09-12
Abstract
No abstract record available.
Inventors
- 👤 Leonard P Meade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:34
CPC Classifications
E; E04; E04H; E04H7/00; E04H7/02; E04H7/18; E04H7/20; E04G; E04G21/00; E04G21/02; E04G21/04; E04G21/0418; E04G21/0472; F; F17; F17C; F17C3/00; F17C3/02; F17C3/022; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0119; F17C2201/03; F17C2201/032; F17C2201/05; F17C2201/052; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0604; F17C2203/0634; F17C2203/0636; F17C2203/0639; F17C2203/0658; F17C2203/0663; F17C2203/0673; F17C2203/0678; F17C2209/00; F17C2209/22; F17C2209/228; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/03; F17C2223/033; F17C2260/00; F17C2260/03; F17C2260/035; F17C2260/036; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49746
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1275696A
Cited
GB111621A
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US1818005A
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US2023308A
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US2036180A
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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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |