Patent US994335A successfully refreshed from Google Patents.
US994335A
Expired / Lapsed
US
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Pumping system.
Assignee: Individual
•
Filing: 1911-01-23
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Granted: 1911-06-06
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Expires: 1931-01-23
Abstract
No abstract record available.
Inventors
- 👤 Elijah H Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:58
CPC Classifications
F; F04; F04F; F04F10/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2842; Y10T137/2877; Y10T137/8593; Y10T137/85978; Y10T137/86131; Y10T137/86163
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) | 1914-06-05 | 1914-12-05 | 1915-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-06-05 | 1918-12-05 | 1919-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-06-05 | 1922-12-05 | 1923-06-06 | $7700.00 | Window Closed / Lapsed |