US899820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for pumping air and gases.
Assignee: Individual
•
Filing: 1905-11-28
•
Granted: 1908-09-29
•
Expires: 1925-11-28
Abstract
No abstract record available.
Inventors
- 👤 William G Abbott Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:54
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/54
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) | 1911-09-29 | 1912-03-30 | 1912-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-09-29 | 1916-03-30 | 1916-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-09-29 | 1920-03-30 | 1920-09-29 | $7700.00 | Window Closed / Lapsed |