US2538579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroperforating apparatus
Assignee: MEAKER
•
Filing: 1947-01-18
•
Granted: 1951-01-16
•
Expires: 1967-01-18
Abstract
No abstract record available.
Inventors
- 👤 John W Meaker
- 👤 Clarence H Mcshan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:28
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/26; B26F1/28; A; A42; A42C; A42C1/00; A42C1/08; A43; A43D; A43D8/00; A43D8/16; A43D8/18; C; C14; C14B; C14B5/00; C14B2700/00; C14B2700/11; C14B2700/116
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US619874A
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US1068774A
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US1017009A
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US1016716A
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US1250140A
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US2011645A
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US2141869A
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US2215411A
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US2365576A
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US2385246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-15 | 1954-07-17 | 1955-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-15 | 1958-07-17 | 1959-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-15 | 1962-07-17 | 1963-01-16 | $7700.00 | Window Closed / Lapsed |