US2471307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming threaded caps
Assignee: CROWN CORK SPECIALTY Corp
•
Filing: 1943-05-04
•
Granted: 1949-05-24
•
Expires: 1963-05-04
Abstract
No abstract record available.
Inventors
- 👤 Leslie R N Carvalho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:27
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/38; B21D51/44; B21D51/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US262723A
Cited
US859121A
Cited
US971455A
Cited
US1057098A
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US1125481A
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US1271070A
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US1540301A
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US1434806A
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US1612449A
Cited
US1755597A
Cited
US1771955A
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US1683166A
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US1839284A
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US1797030A
Cited
US1803022A
Cited
US1992181A
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US2079932A
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US1963635A
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GB430096A
Cited
US2073415A
Cited
US2220913A
Cited
US2257760A
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US2224338A
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US2330896A
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US2334243A
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US2390721A
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US2403287A
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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) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |