US2667667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic ceiling construction
Assignee: LEVEL LINE CEILINGS Inc
•
Filing: 1948-11-05
•
Granted: 1954-02-02
•
Expires: 1968-11-05
Abstract
No abstract record available.
Inventors
- 👤 Jacobson Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:40
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/06; E04B9/065; E04B9/22; E04B9/24; E04B9/241; E04B9/242; E04B9/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1931713A
Cited
US1974819A
Cited
US1998423A
Cited
US2121213A
Cited
US2099211A
Cited
US2101952A
Cited
US2090043A
Cited
US2307653A
Cited
US2270268A
Cited
US2357560A
Cited
GB577402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |