US1550069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling
Assignee: Individual
•
Filing: 1922-12-19
•
Granted: 1925-08-18
•
Expires: 1942-12-19
Abstract
No abstract record available.
Inventors
- 👤 Neal T Goolsby
- 👤 Marvin S Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:58
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/05; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32114; Y10T403/32213
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) | 1928-08-17 | 1929-02-16 | 1929-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-08-17 | 1933-02-16 | 1933-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-08-17 | 1937-02-16 | 1937-08-18 | $7700.00 | Window Closed / Lapsed |