US540584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet-metal elbow and process of making same
Assignee: —
•
Filing: —
•
Granted: 1895-06-04
•
Expires: 1912-06-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:36
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/10; B21C37/104
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) | 1898-06-03 | 1898-12-03 | 1899-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1902-06-04 | 1902-12-04 | 1903-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1906-06-04 | 1906-12-04 | 1907-06-05 | $7700.00 | Window Closed / Lapsed |