US2704801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of riveting
Assignee: LOUIS R DUMAN
•
Filing: 1950-04-03
•
Granted: 1955-03-22
•
Expires: 1970-04-03
Abstract
No abstract record available.
Inventors
- 👤 Epstein Hirsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:08
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21F; B21F11/00; B21J15/02; B21J15/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/49947; Y10T29/49954; Y10T29/49956; Y10T29/49972
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US705130A
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US1238785A
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US1215964A
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US1302230A
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US1346054A
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US1343346A
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US1337457A
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US1449369A
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US1587445A
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US1873619A
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US1956841A
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US1978363A
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US2331531A
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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) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |