US806330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump-drain.
Assignee: Individual
•
Filing: 1905-03-24
•
Granted: 1905-12-05
•
Expires: 1925-03-24
Abstract
No abstract record available.
Inventors
- 👤 Ernest E Ervin
- 👤 Anton J Konantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:22
CPC Classifications
F; F04; F04B; F04B7/00; F04B7/04; F04B7/06; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/8593; Y10T137/85978; Y10T137/86179
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) | 1908-12-04 | 1909-06-05 | 1909-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-12-04 | 1913-06-05 | 1913-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-12-04 | 1917-06-05 | 1917-12-05 | $7700.00 | Window Closed / Lapsed |