Patent US237093A successfully refreshed from Google Patents.
US237093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
crowell
Assignee: —
•
Filing: —
•
Granted: 1881-02-01
•
Expires: 1898-02-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:15
CPC Classifications
A; A61; A61C; A61C15/00; A61C15/02; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17291; Y10T279/17299
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) | 1884-02-01 | 1884-08-02 | 1885-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1888-02-01 | 1888-08-02 | 1889-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1892-02-01 | 1892-08-02 | 1893-02-01 | $7700.00 | Window Closed / Lapsed |