US2786217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rivet forming machine having opposed punches and an indexible blank carrier
Assignee: Townsend Co
•
Filing: 1953-05-14
•
Granted: 1957-03-26
•
Expires: 1973-05-14
Abstract
No abstract record available.
Inventors
- 👤 Horace L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:52
CPC Classifications
B; B21; B21K; B21K27/00; B21K27/06; B21J; B21J9/00; B21J9/02; B21J9/06; B21K1/00; B21K1/58; B21K1/60; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/519
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US995509A
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US1468046A
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US1617121A
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US1830722A
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US2074678A
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US2114420A
Cited
US2236221A
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US2382041A
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US2396995A
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US2395721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |