US2442949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dimpling and riveting machine
Assignee: Chicago Pneumatic Tool Co LLC
•
Filing: 1945-02-15
•
Granted: 1948-06-08
•
Expires: 1965-02-15
Abstract
No abstract record available.
Inventors
- 👤 Howard R Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:15
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/02; B21D22/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US767205A
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GB487152A
Cited
US2230518A
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US2356526A
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US2338736A
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US2365147A
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US2312554A
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US2323814A
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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) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |