Patent US2497500A successfully refreshed from Google Patents.
US2497500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe bender and straightener
Assignee: Individual
•
Filing: 1948-05-05
•
Granted: 1950-02-14
•
Expires: 1968-05-05
Abstract
No abstract record available.
Inventors
- 👤 Hightower Corrie
- 👤 Springett Herold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:48
CPC Classifications
B; B21; B21D; B21D7/00; B21D7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US134349A
Cited
US389495A
Cited
DE583954C
Cited
GB190202482A
Cited
US719760A
Cited
US1849181A
Cited
US1906392A
Cited
DE572588C
Cited
US1899280A
Cited
FR763845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |