US2944622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound absorbing structure
Assignee: Fenestra Inc
•
Filing: 1957-01-28
•
Granted: 1960-07-12
•
Expires: 1977-01-28
Abstract
No abstract record available.
Inventors
- 👤 Dobbins Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:44
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/04; E04B9/0478; E04B9/0485; E04B9/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2187335A
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US2293351A
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US2412713A
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US2459121A
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US2423199A
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US2550455A
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US2747470A
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US2600843A
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US2717538A
Cited
US2897551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |