US653900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming welded rings.
Assignee: National Tube Co
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Filing: 1899-10-14
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Granted: 1900-07-17
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Expires: 1919-10-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Bray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:28
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/15577; B; B21; B21D; B21D53/00; B21D53/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/4979
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) | 1903-07-17 | 1904-01-16 | 1904-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-07-17 | 1908-01-16 | 1908-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-07-17 | 1912-01-16 | 1912-07-17 | $7700.00 | Window Closed / Lapsed |