US2186841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rivet feeding mechanism
Assignee: Midland Steel Products Co
•
Filing: 1939-03-08
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Granted: 1940-01-09
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Expires: 1959-03-08
Abstract
No abstract record available.
Inventors
- 👤 Andrew E Rylander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:37
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/30; B21J15/32; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/534; Y10T29/53417; Y10T29/53422
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) | 1943-01-08 | 1943-07-10 | 1944-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-01-08 | 1947-07-10 | 1948-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-01-08 | 1951-07-10 | 1952-01-09 | $7700.00 | Window Closed / Lapsed |