Patent US538193A successfully refreshed from Google Patents.
US538193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nand fredureau
Assignee: —
•
Filing: 1893-01-10
•
Granted: 1895-04-23
•
Expires: 1913-01-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:41
CPC Classifications
F; F21; F21V; F21V5/00; F21V5/02; F21V29/00; F21V29/50; F21V29/502; F21V29/506; F21V7/00; F21V7/0091; F21V3/00; F21V3/02
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) | 1898-04-22 | 1898-10-22 | 1899-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1902-04-23 | 1902-10-23 | 1903-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1906-04-23 | 1906-10-23 | 1907-04-24 | $7700.00 | Window Closed / Lapsed |