US1120015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine for air-pumps.
Assignee: Blake & Knowles Steam Pump Works
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Filing: 1908-07-09
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Granted: 1914-12-08
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Expires: 1928-07-09
Abstract
No abstract record available.
Inventors
- 👤 Phillips P Bourne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:09
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/02; B23Q5/027; B23Q5/033; F; F15; F15B; F15B11/00; F15B11/02; F15B11/04; F15B11/042
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) | 1917-12-07 | 1918-06-08 | 1918-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-12-07 | 1922-06-08 | 1922-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-12-07 | 1926-06-08 | 1926-12-08 | $7700.00 | Window Closed / Lapsed |