US2611504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hanger for floating roofs
Assignee: Chicago Bridge and Iron Co
•
Filing: 1947-06-03
•
Granted: 1952-09-23
•
Expires: 1967-06-03
Abstract
No abstract record available.
Inventors
- 👤 Wilbur E Busse
- 👤 Clifford M Orr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:19
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)
US1693468A
Cited
US1660021A
Cited
DE475825C
Cited
US2066292A
Cited
US2054693A
Cited
US2145812A
Cited
US2426755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |