US2453868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically bending work such as tubing into serpentine coils
Assignee: Pedrick Tool & Machine Co
•
Filing: 1947-02-20
•
Granted: 1948-11-16
•
Expires: 1967-02-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Ralph M Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:27
CPC Classifications
B; B21; B21D; B21D11/00; B21D11/06; B21D11/07
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |