US2986273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal junction piece and the production thereof
Assignee: Chesterfield Tube Co Ltd
•
Filing: 1954-02-26
•
Granted: 1961-05-30
•
Expires: 1974-02-26
Abstract
No abstract record available.
Inventors
- 👤 William E Bardgett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:26
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/22; B21C33/00; B21C33/004; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |