US3371190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for perforating sheet plastic by means of an electron beam
Assignee: Messer Griesheim GmbH
•
Filing: 1965-07-26
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Granted: 1968-02-27
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Expires: 1985-07-26
Abstract
No abstract record available.
Inventors
- 👤 Meyer Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:33
CPC Classifications
B; B23; B23K; B23K15/00; B23K15/08; B23K15/085; B26; B26F; B26F1/00; B26F1/26; B26F1/31; H; H01; H01J; H01J37/00; H01J37/30; H01J37/302; H01J37/31; H05; H05K; H05K3/00; H05K3/0011; H05K3/0017; H05K3/0026; H05K3/0032; H05K2203/00; H05K2203/09; H05K2203/092
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE1033816B
Cited
US2668133A
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US2861166A
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US2902583A
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US3033974A
Cited
US2978569A
Cited
FR1353054A
Cited
US3293587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |