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US3478561A
Expired / Lapsed
US
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Extrusion
Assignee: Davy Loewy Ltd
•
Filing: 1966-10-21
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Granted: 1969-11-18
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Expires: 1986-10-21
Abstract
No abstract record available.
Inventors
- 👤 Herbert John Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:10
CPC Classifications
B; B21; B21C; B21C33/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US896683A
Cited
US887718A
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US927076A
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US2738062A
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US3097742A
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US3120304A
Cited
US3156359A
Cited
US3182479A
Cited
US3359770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |