US579473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
armstrong
Assignee: —
•
Filing: —
•
Granted: 1897-03-23
•
Expires: 1914-03-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:23
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/22; G06F7/24; H; H03; H03M; H03M1/00
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) | 1900-03-23 | 1900-09-22 | 1901-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1904-03-23 | 1904-09-22 | 1905-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1908-03-23 | 1908-09-22 | 1909-03-24 | $7700.00 | Window Closed / Lapsed |