Patent US3460299A successfully refreshed from Google Patents.
US3460299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminous sound absorbing ceiling
Assignee: BERTRAM A WILSON
•
Filing: 1967-09-27
•
Granted: 1969-08-12
•
Expires: 1987-09-27
Abstract
No abstract record available.
Inventors
- 👤 Bertram A Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:21
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/30; E04B9/303; E04B9/04; E04B2009/0492
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1789827A
Cited
US2423199A
Cited
FR1091635A
Cited
GB837929A
Cited
GB900766A
Cited
US3186129A
Cited
US3333387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |