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US2197098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mandrel
Assignee: National Tube Co
•
Filing: 1936-12-07
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Granted: 1940-04-16
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Expires: 1956-12-07
Abstract
No abstract record available.
Inventors
- 👤 Davis Herbert
- 👤 Pawol Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:24
CPC Classifications
B; B21; B21J; B21J9/00; B21J9/02; B21J9/04; B21B; B21B25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-04-16 | 1943-10-16 | 1944-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-16 | 1947-10-16 | 1948-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-16 | 1951-10-16 | 1952-04-16 | $7700.00 | Window Closed / Lapsed |