Patent US1696952A successfully refreshed from Google Patents.
Patent US434392A successfully refreshed from Google Patents.
US434392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
hyatt
Assignee: —
•
Filing: —
•
Granted: 1890-08-12
•
Expires: 1907-08-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:40
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/686; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516
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) | 1893-08-11 | 1894-02-10 | 1894-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1897-08-11 | 1898-02-10 | 1898-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1901-08-12 | 1902-02-11 | 1902-08-13 | $7700.00 | Window Closed / Lapsed |