US3462992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube drawing machines
Assignee: Marshall Richards Machine Co Ltd
•
Filing: 1966-09-14
•
Granted: 1969-08-26
•
Expires: 1986-09-14
Abstract
No abstract record available.
Inventors
- 👤 Samuel Hugh Richards
- 👤 Norman D Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:26
CPC Classifications
B; B21; B21C; B21C1/00; B21C1/02; B21C1/12
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) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |