US2759554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic absorber
Assignee: RTX BBN Technologies Corp
•
Filing: 1952-08-04
•
Granted: 1956-08-21
•
Expires: 1972-08-04
Abstract
No abstract record available.
Inventors
- 👤 Jordan J Baruch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:28
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/24; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/8209
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1660745A
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US1900522A
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US2270825A
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US2308869A
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US2542428A
Cited
US2519161A
Cited
US2528049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |