Patent US4198978A successfully refreshed from Google Patents.
US450767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Edward e
Assignee: —
•
Filing: —
•
Granted: 1891-04-21
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Expires: 1908-04-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:53
CPC Classifications
F; F16; F16K; F16K37/00; F16K37/0008; F16K37/0016; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7837; Y10T137/7869; Y10T137/8158; Y10T137/8225; Y10T137/8275; Y10T137/8292; Y10T137/8309
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) | 1894-04-20 | 1894-10-20 | 1895-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1898-04-20 | 1898-10-20 | 1899-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1902-04-21 | 1902-10-21 | 1903-04-22 | $7700.00 | Window Closed / Lapsed |