US520266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Henry mattrer
Assignee: —
•
Filing: —
•
Granted: 1894-05-22
•
Expires: 1911-05-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:34
CPC Classifications
C; C04; C04B; C04B38/00; C04B38/06; C04B38/063; C04B38/0635; C04B38/0645; C04B38/065
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) | 1897-05-21 | 1897-11-20 | 1898-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1901-05-22 | 1901-11-21 | 1902-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1905-05-22 | 1905-11-21 | 1906-05-23 | $7700.00 | Window Closed / Lapsed |