US1207689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-well equipment.
Assignee: Individual
•
Filing: 1915-12-22
•
Granted: 1916-12-05
•
Expires: 1935-12-22
Abstract
No abstract record available.
Inventors
- 👤 John Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:51
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/14; E21B43/00; E21B43/34; E21B43/35; E21B43/38
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) | 1919-12-05 | 1920-06-05 | 1920-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-12-05 | 1924-06-05 | 1924-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-12-05 | 1928-06-05 | 1928-12-05 | $7700.00 | Window Closed / Lapsed |