Patent US2667853A successfully refreshed from Google Patents.
US2667853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
ingersoll
Assignee: —
•
Filing: —
•
Granted: 1954-02-02
•
Expires: 1971-02-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:00
CPC Classifications
B; B21; B21D; B21D45/00; B21D45/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US227829A
Cited
US451534A
Cited
US1285104A
Cited
US1415838A
Cited
US1570710A
Cited
US1747463A
Cited
US1878520A
Cited
US1797239A
Cited
US1872474A
Cited
US2291722A
Cited
US2264826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |