US3380552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustical panel with honeycomb core and ventilation passageways
Assignee: LUMINOUS CEILINGS Inc
•
Filing: 1966-11-28
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Granted: 1968-04-30
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Expires: 1986-11-28
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Segil
- 👤 Richard N White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:45
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/36; E04C2/365; E04B2001/742; E04B2001/748; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24157
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3258587A
Cited
US2587884A
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US2730942A
Cited
US3095943A
Cited
US3132579A
Cited
US3200734A
Cited
US3295432A
Cited
US3301163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |