Patent US744547A successfully refreshed from Google Patents.
US744547A
Expired / Lapsed
US
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Pumping-engine.
Assignee: Individual
•
Filing: 1903-02-14
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Granted: 1903-11-17
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Expires: 1923-02-14
Abstract
No abstract record available.
Inventors
- 👤 Ebenezer Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:04
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/02; F04B15/023
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) | 1906-11-16 | 1907-05-18 | 1907-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-11-16 | 1911-05-18 | 1911-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-11-16 | 1915-05-18 | 1915-11-17 | $7700.00 | Window Closed / Lapsed |