US213100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in preparing paper and other fabrics and materials for protecting metals
Assignee: —
•
Filing: —
•
Granted: 1879-03-11
•
Expires: 1896-03-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:36
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/36; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31993; Y10T428/31996
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) | 1882-03-10 | 1882-09-09 | 1883-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1886-03-10 | 1886-09-09 | 1887-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1890-03-10 | 1890-09-09 | 1891-03-11 | $7700.00 | Window Closed / Lapsed |