US2721736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-cooled cupola
Assignee: Individual
•
Filing: 1951-07-21
•
Granted: 1955-10-25
•
Expires: 1971-07-21
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Reece
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:17
CPC Classifications
F; F27; F27B; F27B1/00; F27B1/10; F27B1/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US91447A
Cited
US452607A
Cited
US723641A
Cited
US842663A
Cited
US1015361A
Cited
US1126028A
Cited
US1758478A
Cited
US2256179A
Cited
US2270297A
Cited
US2238036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |