Patent US230137A successfully refreshed from Google Patents.
US230137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Art of polishing glass
Assignee: —
•
Filing: —
•
Granted: 1880-07-20
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Expires: 1897-07-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:43
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0346; C; C03; C03C; C03C15/00
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) | 1883-07-20 | 1884-01-19 | 1884-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1887-07-20 | 1888-01-19 | 1888-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1891-07-20 | 1892-01-19 | 1892-07-20 | $7700.00 | Window Closed / Lapsed |