Patent US3516568A successfully refreshed from Google Patents.
US3516568A
Expired / Lapsed
US
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Storage of liquids
Assignee: National Research Development Corp UK
•
Filing: 1967-06-29
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Granted: 1970-06-23
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Expires: 1987-06-29
Abstract
No abstract record available.
Inventors
- 👤 Daniel Cecil Edward Fish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:01
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/76; Y; Y02; Y02A; Y02A20/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2211958A
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US2482468A
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US2987215A
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US2947147A
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US2867347A
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US2924350A
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US3187793A
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US3052380A
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US3250742A
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US3282361A
Cited
US3260371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |