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US2935151A
Expired / Lapsed
US
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Acoustic absorber
Assignee: RTX BBN Technologies Corp
•
Filing: 1955-09-19
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Granted: 1960-05-03
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Expires: 1975-09-19
Abstract
No abstract record available.
Inventors
- 👤 Bill G Watters
- 👤 Jordan J Baruch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:52
CPC Classifications
F; F21; F21V; F21V33/00; F21V33/006; E; E04; E04B; E04B9/00; E04B9/34; G; G10; G10K; G10K11/00; G10K11/16; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1726500A
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US2159488A
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US2096233A
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US2506951A
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US2656004A
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US2659808A
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DE866183C
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US2703627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |