US2371423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mandrel extrusion rivet
Assignee: B F B ENGINEERS Inc
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Filing: 1943-04-17
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Granted: 1945-03-13
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Expires: 1963-04-17
Abstract
No abstract record available.
Inventors
- 👤 Conrad R Buchet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:43
CPC Classifications
F; F16; F16B; F16B19/00; F16B19/04; F16B19/08; F16B19/10; F16B19/1027; F16B19/1036; F16B19/1045; F16B19/1054; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49934; Y10T29/49938; Y10T29/4994; Y10T29/51; Y10T29/5116
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-03-12 | 1948-09-11 | 1949-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-03-12 | 1952-09-11 | 1953-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-03-12 | 1956-09-11 | 1957-03-13 | $7700.00 | Window Closed / Lapsed |