US226741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastening boiler-tubes
Assignee: —
•
Filing: —
•
Granted: 1880-04-20
•
Expires: 1897-04-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:24
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373; Y10T29/49375; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/4994
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) | 1883-04-20 | 1883-10-20 | 1884-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1887-04-20 | 1887-10-20 | 1888-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1891-04-20 | 1891-10-20 | 1892-04-20 | $7700.00 | Window Closed / Lapsed |