US3428278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permeable airfoil skin
Assignee: Fort Wayne Metals Inc
•
Filing: 1966-06-01
•
Granted: 1969-02-18
•
Expires: 1986-06-01
Abstract
No abstract record available.
Inventors
- 👤 Ardelle Glaze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:23
CPC Classifications
B; B21; B21F; B21F27/00; B21F27/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US460218A
Cited
US966599A
Cited
US1078380A
Cited
US1122081A
Cited
US1459845A
Cited
US1866850A
Cited
US2049246A
Cited
US2082513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |