US2840678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rivet machine feeding means
Assignee: Omark Industries Inc
•
Filing: 1956-08-13
•
Granted: 1958-06-24
•
Expires: 1976-08-13
Abstract
No abstract record available.
Inventors
- 👤 Emil H Hill
- 👤 Wilfred O England
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:18
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/30; B21J15/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1807971A
Cited
US1993619A
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US2198976A
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US2427712A
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US2604577A
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US2647199A
Cited
US2764799A
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US2714647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |