Patent US442461A successfully refreshed from Google Patents.
US442461A
Expired / Lapsed
US
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And david t
Assignee: —
•
Filing: —
•
Granted: 1890-12-09
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Expires: 1907-12-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:59
CPC Classifications
B; B04; B04B; B04B15/00; B04B15/02; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1282
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) | 1893-12-08 | 1894-06-09 | 1894-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1897-12-08 | 1898-06-09 | 1898-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1901-12-09 | 1902-06-10 | 1902-12-10 | $7700.00 | Window Closed / Lapsed |