US2508291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rethreading tool
Assignee: Individual
•
Filing: 1945-06-09
•
Granted: 1950-05-16
•
Expires: 1965-06-09
Abstract
No abstract record available.
Inventors
- 👤 Porro Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:10
CPC Classifications
B; B23; B23G; B23G9/00; B23G9/009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US343233A
Cited
US1312187A
Cited
GB189728108A
Cited
US1017403A
Cited
US1215121A
Cited
US1235914A
Cited
US1371660A
Cited
US1430831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |