Patent US638554A successfully refreshed from Google Patents.
US638554A
Expired / Lapsed
US
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Method of and apparatus for forming tubular joints.
Assignee: Individual
•
Filing: 1898-04-15
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Granted: 1899-12-05
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Expires: 1918-04-15
Abstract
No abstract record available.
Inventors
- 👤 Charles Vandeleur Burton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:13
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/01; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929; Y10T29/49938; Y10T29/4994; Y10T29/53; Y10T29/53709; Y10T403/00; Y10T403/49; Y10T403/4991; Y10T403/55
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) | 1902-12-05 | 1903-06-06 | 1903-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1906-12-05 | 1907-06-06 | 1907-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1910-12-05 | 1911-06-06 | 1911-12-06 | $7700.00 | Window Closed / Lapsed |