Patent US2884962A successfully refreshed from Google Patents.
US2884962A
Expired / Lapsed
US
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Die set for shaping a spring strip to predetermined form
Assignee: American Metal Products Co
•
Filing: 1953-12-08
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Granted: 1959-05-05
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Expires: 1973-12-08
Abstract
No abstract record available.
Inventors
- 👤 Ernst G Ott
- 👤 Bernard J Wallis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:39
CPC Classifications
B; B21; B21F; B21F35/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2124923A
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US2272740A
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US2317198A
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US2286255A
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US2450876A
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US2536643A
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US2632482A
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US2677398A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |