US2649887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scroll bending apparatus
Assignee: Individual
•
Filing: 1950-11-21
•
Granted: 1953-08-25
•
Expires: 1970-11-21
Abstract
No abstract record available.
Inventors
- 👤 Henry R Lehman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:43
CPC Classifications
B; B21; B21D; B21D11/00; B21D11/06; B21F; B21F3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US224526A
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US292418A
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US401509A
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US413330A
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GB189610854A
Cited
US725026A
Cited
US772157A
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US896116A
Cited
US1627604A
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US2607395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |