US2606516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming sheet metal material
Assignee: HARBOR AIRCRAFT Corp
•
Filing: 1947-12-16
•
Granted: 1952-08-12
•
Expires: 1967-12-16
Abstract
No abstract record available.
Inventors
- 👤 Burt F Raynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:11
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US160967A
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US506247A
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US562309A
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US588804A
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US731367A
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US977639A
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US1934292A
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US2190664A
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US2377664A
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GB604472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |