Patent US4429221A successfully refreshed from Google Patents.
US573299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traugott sandmeyer
Assignee: —
•
Filing: —
•
Granted: 1896-12-15
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Expires: 1913-12-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:45
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/78; C07D311/80; C07D311/82; C07D311/84; C07D311/88
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) | 1899-12-15 | 1900-06-16 | 1900-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1903-12-16 | 1904-06-16 | 1904-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1907-12-16 | 1908-06-16 | 1908-12-16 | $7700.00 | Window Closed / Lapsed |