Patent US2596911A successfully refreshed from Google Patents.
US2596911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal punching apparatus
Assignee: LORENTZEN HARDWARE Manufacturing CORP
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Filing: 1948-09-14
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Granted: 1952-05-13
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Expires: 1968-09-14
Abstract
No abstract record available.
Inventors
- 👤 Nelson Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:08
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; Y; Y10; Y10T; Y10T83/00; Y10T83/727; Y10T83/73; Y10T83/731; Y10T83/748; Y10T83/7593; Y10T83/76; Y10T83/869; Y10T83/8821; Y10T83/8828; Y10T83/8831
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US521654A
Cited
US743620A
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GB191228027A
Cited
US1667028A
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US1796939A
Cited
US1874068A
Cited
US1939478A
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US2251433A
Cited
US2209407A
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US2381062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |