Patent US3029667A successfully refreshed from Google Patents.
US3029667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal working
Assignee: Lodge and Shipley Co
•
Filing: 1955-08-31
•
Granted: 1962-04-17
•
Expires: 1975-08-31
Abstract
No abstract record available.
Inventors
- 👤 Sporck Claus Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:19
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/14; B21D22/16
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) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |