US2987215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable volume storage tanks
Assignee: Individual
•
Filing: 1955-08-15
•
Granted: 1961-06-06
•
Expires: 1975-08-15
Abstract
No abstract record available.
Inventors
- 👤 Ii William E Joor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:06
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/34; B65D88/42; B65D88/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1426998A
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US1666416A
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US1748231A
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US1930953A
Cited
US2006505A
Cited
US1932403A
Cited
US2287211A
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US2282772A
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US2536019A
Cited
US2495755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |