Patent US2850110A successfully refreshed from Google Patents.
US2850110A
Expired / Lapsed
US
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Translucent acoustical ceiling panels
Assignee: Benjamin Electric Manufacturing Co
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Filing: 1954-09-07
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Granted: 1958-09-02
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Expires: 1974-09-07
Abstract
No abstract record available.
Inventors
- 👤 Benjamin Reuben Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:04
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/32; E04B9/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2011252A
Cited
US2096233A
Cited
US2659808A
Cited
US2710335A
Cited
US2703627A
Cited
DK108986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |