Patent US2748631A successfully refreshed from Google Patents.
US2748631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube end shaping apparatus
Assignee: Babcock and Wilcox Co
•
Filing: 1952-02-11
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Granted: 1956-06-05
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Expires: 1972-02-11
Abstract
No abstract record available.
Inventors
- 👤 Oliver A Neale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:21
CPC Classifications
B; B21; B21D; B21D19/00; B21D19/005; Y; Y10; Y10T; Y10T407/00; Y10T407/13; Y10T408/00; Y10T408/60; Y10T408/62; Y10T408/625; Y10T408/89; Y10T408/899
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1053531A
Cited
US1204994A
Cited
US1499416A
Cited
US2187221A
Cited
US2539863A
Cited
GB608157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |