US139374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in tube-expanders
Assignee: —
•
Filing: —
•
Granted: 1873-05-27
•
Expires: 1890-05-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:18
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/4994; Y10T29/53; Y10T29/53709; Y10T29/53717; Y10T29/53722; Y10T29/53796; Y10T29/53835
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) | 1876-05-26 | 1876-11-25 | 1877-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1880-05-26 | 1880-11-25 | 1881-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1884-05-26 | 1884-11-25 | 1885-05-27 | $7700.00 | Window Closed / Lapsed |