US2960141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofolding of metal
Assignee: Johns Manville Corp
•
Filing: 1957-12-26
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Granted: 1960-11-15
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Expires: 1977-12-26
Abstract
No abstract record available.
Inventors
- 👤 Donald P Rutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:45
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/02; B21D26/021; B21D26/027; B21D15/00; B21D15/04; B21D15/10; B21D26/029; B21D26/031
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) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |