US2781016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die construction
Assignee: TUBING SEAL CAP Inc
•
Filing: 1952-12-10
•
Granted: 1957-02-12
•
Expires: 1972-12-10
Abstract
No abstract record available.
Inventors
- 👤 Frank W Livermont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:55
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/02; B21D26/033; B21D26/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1091763A
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US1487013A
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US1613961A
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US1921188A
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US2128614A
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US2136308A
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US2156889A
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US2203868A
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US2331430A
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US2399775A
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US2592867A
Cited
US2407855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-12 | 1960-08-13 | 1961-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-12 | 1964-08-13 | 1965-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-12 | 1968-08-13 | 1969-02-12 | $7700.00 | Window Closed / Lapsed |