US2696930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal hanger for floating roof tanks
Assignee: Chicago Bridge and Iron Co
•
Filing: 1951-08-24
•
Granted: 1954-12-14
•
Expires: 1971-08-24
Abstract
No abstract record available.
Inventors
- 👤 Frederick D Moyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:51
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/34; B65D88/42; B65D88/46
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1426998A
Cited
US1668792A
Cited
US1673984A
Cited
US1930953A
Cited
US2318135A
Cited
US2471404A
Cited
US2587508A
Cited
US2600237A
Cited
US2542444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |