US3416222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of elongate articles
Assignee: British Iron and Steel Research Association BISRA
•
Filing: 1968-02-16
•
Granted: 1968-12-17
•
Expires: 1988-02-16
Abstract
No abstract record available.
Inventors
- 👤 Pearson John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:30
CPC Classifications
B; B21; B21B; B21B1/00; B21B1/08; B21B1/088; B22; B22D; B22D11/00; B22D11/04; B22D11/0406; B22D11/041; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49988; Y10T29/49991
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2008626A
Cited
GB409820A
Cited
US2284703A
Cited
US2264289A
Cited
US2975493A
Cited
US3105296A
Cited
US3209452A
Cited
US3147521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |