US2523930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thread protector
Assignee: Individual
•
Filing: 1945-05-05
•
Granted: 1950-09-26
•
Expires: 1965-05-05
Abstract
No abstract record available.
Inventors
- 👤 Herman A Unke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:01
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/006; B; B65; B65D; B65D59/00; B65D59/06; F; F16; F16L; F16L57/00; F16L57/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-25 | 1954-03-27 | 1954-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-25 | 1958-03-27 | 1958-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-25 | 1962-03-27 | 1962-09-26 | $7700.00 | Window Closed / Lapsed |