DE938681C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Method for drilling fine holes
Assignee: Carl Zeiss SMT GmbH
•
Filing: 1951-02-01
•
Granted: 1956-02-02
•
Expires: 1971-02-01
Abstract
No abstract record available.
Inventors
- 👤 Karl Heinz Dipl-Ph Steigerwald
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-22 21:33
CPC Classifications
G; G04; G04D; G04D3/00; G04D3/0069; G04D3/0071; H; H01; H01J; H01J37/00; H01J37/30; H01J37/31
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.