Patent US2250417A successfully refreshed from Google Patents.
US494890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
eateatj
Assignee: —
•
Filing: —
•
Granted: 1893-04-04
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Expires: 1910-04-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:29
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/24; F04D29/242; F04D29/40; F04D29/42; F04D29/4206; F04D29/4226; F04D29/04; F04D29/043; F04D29/05; F04D29/053; F04D29/26; F04D29/28; F04D29/284; F04D29/30; F04D29/426
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) | 1896-04-03 | 1896-10-03 | 1897-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1900-04-04 | 1900-10-04 | 1901-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1904-04-04 | 1904-10-04 | 1905-04-05 | $7700.00 | Window Closed / Lapsed |