US2266349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing holes in thin sheets of metal or glass
Assignee: Individual
•
Filing: 1938-07-11
•
Granted: 1941-12-16
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Expires: 1958-07-11
Abstract
No abstract record available.
Inventors
- 👤 Wempe Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:15
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/26; B; B23; B23P; B23P15/00; B23P15/16; H; H01; H01J; H01J19/00; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0019; H01J2893/0022; H01J2893/0024; Y; Y10; Y10S; Y10S264/00; Y10S264/44; Y10S425/00; Y10S425/012; Y10T; Y10T29/00; Y10T29/30; Y10T29/301; Y10T29/302; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069; Y10T29/496
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) | 1944-12-15 | 1945-06-16 | 1945-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-12-15 | 1949-06-16 | 1949-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-12-15 | 1953-06-16 | 1953-12-16 | $7700.00 | Window Closed / Lapsed |