Patent US1788023A successfully refreshed from Google Patents.
US1788023A
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US
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Punching device
Assignee: ELECTRO DYNAMIC Co
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Filing: 1927-07-19
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Granted: 1931-01-06
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Expires: 1947-07-19
Abstract
No abstract record available.
Inventors
- 👤 Hochreiner Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:43
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/22; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9411; Y10T83/9418; Y10T83/9457; Y10T83/9473; Y10T83/9476
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) | 1934-01-05 | 1934-07-07 | 1935-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-01-05 | 1938-07-07 | 1939-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-01-05 | 1942-07-07 | 1943-01-06 | $7700.00 | Window Closed / Lapsed |