Patent US5279987A successfully refreshed from Google Patents.
US268522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Half to mathew macdotigall
Assignee: —
•
Filing: —
•
Granted: 1882-12-05
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Expires: 1899-12-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:51
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3446; F01; F01C; F01C21/00; F01C21/08; F01C21/0809
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) | 1885-12-04 | 1886-06-05 | 1886-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1889-12-04 | 1890-06-05 | 1890-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1893-12-04 | 1894-06-05 | 1894-12-05 | $7700.00 | Window Closed / Lapsed |