Patent US2388069A successfully refreshed from Google Patents.
US2388069A
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US
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Electroperforation of sheet material
Assignee: MEAKER
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Filing: 1942-07-24
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Granted: 1945-10-30
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Expires: 1962-07-24
Abstract
No abstract record available.
Inventors
- 👤 John W Meaker
- 👤 Jr Edward H Yonkers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:53
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/26; B26F1/28; Y; Y10; Y10S; Y10S264/00; Y10S264/70; Y10T; Y10T29/00; Y10T29/49; Y10T29/496; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T83/00; Y10T83/02; Y10T83/0333; Y10T83/0385; Y10T83/465; Y10T83/4728
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) | 1948-10-29 | 1949-04-30 | 1949-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-10-29 | 1953-04-30 | 1953-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-10-29 | 1957-04-30 | 1957-10-30 | $7700.00 | Window Closed / Lapsed |