US2957438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of shingles
Assignee: Dondeville Products Co Inc
•
Filing: 1957-07-10
•
Granted: 1960-10-25
•
Expires: 1977-07-10
Abstract
No abstract record available.
Inventors
- 👤 Dondeville M Rippe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:26
CPC Classifications
B; B21; B21D; B21D53/00; B21D49/00; Y; Y10; Y10S; Y10S83/00; Y10S83/92; Y10T; Y10T29/00; Y10T29/51; Y10T29/5147; Y10T29/5148
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) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |