Patent US64072A successfully refreshed from Google Patents.
US64072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charles e
Assignee: —
•
Filing: —
•
Granted: 1867-04-23
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Expires: 1884-04-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:05
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/32; F16; F16K; F16K15/00; F16K15/02; F16K15/06; Y; Y10; Y10T; Y10T137/00; Y10T137/6198; Y10T137/6253; Y10T137/6307; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908
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) | 1870-04-22 | 1870-10-22 | 1871-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1874-04-22 | 1874-10-22 | 1875-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1878-04-22 | 1878-10-22 | 1879-04-23 | $7700.00 | Window Closed / Lapsed |