US3540171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated cover for steel storage and thermal control
Assignee: Republic Steel Corp
•
Filing: 1968-06-18
•
Granted: 1970-11-17
•
Expires: 1988-06-18
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Kumnick
- 👤 Charles T Flynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:04
CPC Classifications
F; F27; F27D; F27D99/00; F27D1/00; F27D1/04; F27D1/06; F27D15/00; F27D15/02; F27D1/0003; F27D1/0006; F27D1/0009; F27D2001/0059; F27D2001/0069; F27D2001/0073; F27D5/00; F27D5/0062
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |