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US2591108A
Expired / Lapsed
US
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Die apparatus
Assignee: PRODUCTION TOOL AND DIE CO Inc
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Filing: 1949-01-24
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Granted: 1952-04-01
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Expires: 1969-01-24
Abstract
No abstract record available.
Inventors
- 👤 Oswald R Vigneault
- 👤 Douglas M Small
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:06
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US798530A
Cited
US913841A
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US1270933A
Cited
US1904920A
Cited
US1884708A
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US2177027A
Cited
US2270186A
Cited
US2331490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |