Patent US684379A successfully refreshed from Google Patents.
US684379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam vacuum-pump.
Assignee: AG KERNS
•
Filing: 1901-01-25
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Granted: 1901-10-08
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Expires: 1921-01-25
Abstract
No abstract record available.
Inventors
- 👤 Edwin B Rayner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:36
CPC Classifications
F; F04; F04B; F04B17/00; F04B17/006
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) | 1904-10-07 | 1905-04-08 | 1905-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-10-07 | 1909-04-08 | 1909-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-10-07 | 1913-04-08 | 1913-10-08 | $7700.00 | Window Closed / Lapsed |