US2699740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace arch and curtain wall construction
Assignee: Laclede-Christy Co
•
Filing: 1949-06-10
•
Granted: 1955-01-18
•
Expires: 1969-06-10
Abstract
No abstract record available.
Inventors
- 👤 Herman W Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:38
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/18; F27D1/1858; F27D1/02; F27D1/021; F27D2001/1875
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1606315A
Cited
US783133A
Cited
US812072A
Cited
US952232A
Cited
US991896A
Cited
US1457443A
Cited
US1443487A
Cited
US1462267A
Cited
US1585003A
Cited
US1710247A
Cited
US1705965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-17 | 1958-07-19 | 1959-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-17 | 1962-07-19 | 1963-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-17 | 1966-07-19 | 1967-01-18 | $7700.00 | Window Closed / Lapsed |