US1126215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of increasing the flow of gas and vapors from wells.
Assignee: HOPE ENGINEERING AND SUPPLY Co
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Filing: 1913-07-24
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Granted: 1915-01-26
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Expires: 1933-07-24
Abstract
No abstract record available.
Inventors
- 👤 Harry D Hildebrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:56
CPC Classifications
E; E21; E21B; E21B36/00; E21B36/04
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) | 1918-01-25 | 1918-07-27 | 1919-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-01-25 | 1922-07-27 | 1923-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-01-25 | 1926-07-27 | 1927-01-26 | $7700.00 | Window Closed / Lapsed |