US2873142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffuser for sub-critical flow
Assignee: GKN Aerospace Sweden AB
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Filing: 1955-09-16
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Granted: 1959-02-10
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Expires: 1975-09-16
Abstract
No abstract record available.
Inventors
- 👤 Zetterstrom Karl-Axel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:38
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/26; B05B1/262; B05B1/265; B05B1/14; B05B1/1421; B05B1/1423; B05B1/1424
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |