US212107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in testing-machines
Assignee: —
•
Filing: —
•
Granted: 1879-02-11
•
Expires: 1896-02-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:57
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/08; G01N3/10
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) | 1882-02-10 | 1882-08-12 | 1883-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1886-02-10 | 1886-08-12 | 1887-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1890-02-10 | 1890-08-12 | 1891-02-11 | $7700.00 | Window Closed / Lapsed |