US3167206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary seal for floating tank roof
Assignee: Texas Pipe Line Co
•
Filing: 1962-09-17
•
Granted: 1965-01-26
•
Expires: 1982-09-17
Abstract
No abstract record available.
Inventors
- 👤 William R Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:06
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)
US2259185A
Cited
US2287211A
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US2348379A
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US2568728A
Cited
US2897998A
Cited
US2973113A
Cited
US3106309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |