Patent US2064539A successfully refreshed from Google Patents.
US2064539A
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Method of and means for shaping the ends of tubes
Assignee: Arnold Schwinn & Co
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Filing: 1934-01-18
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Granted: 1936-12-15
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Expires: 1954-01-18
Abstract
No abstract record available.
Inventors
- 👤 Kenneth V Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:06
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/04; B21D39/044; B21D53/00; B21D53/86; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0524; Y10T83/0529; Y10T83/0596; Y10T83/0605; Y10T83/566; Y10T83/5669; Y10T83/5733; Y10T83/869; Y10T83/8821; Y10T83/8854; Y10T83/929; Y10T83/9411; Y10T83/9447
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) | 1939-12-15 | 1940-06-15 | 1940-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-12-15 | 1944-06-15 | 1944-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-12-15 | 1948-06-15 | 1948-12-15 | $7700.00 | Window Closed / Lapsed |