US871931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for tempering and annealing car-wheels.
Assignee: Individual
•
Filing: 1906-11-15
•
Granted: 1907-11-26
•
Expires: 1926-11-15
Abstract
No abstract record available.
Inventors
- 👤 John M Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:35
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/62; C21D1/673
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) | 1910-11-25 | 1911-05-27 | 1911-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-11-25 | 1915-05-27 | 1915-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-11-25 | 1919-05-27 | 1919-11-26 | $7700.00 | Window Closed / Lapsed |