US2755759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locating and ejecting mechanism
Assignee: American Flange and Manufacturing Co Inc
•
Filing: 1951-07-09
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Granted: 1956-07-24
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Expires: 1971-07-09
Abstract
No abstract record available.
Inventors
- 👤 Seward M Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:51
CPC Classifications
B; B21; B21D; B21D45/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US227827A
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US227829A
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US451534A
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US784415A
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US1000002A
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US1415838A
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US1747463A
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US2275561A
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US2433533A
Cited
US2421365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |