US2545208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical perforating apparatus
Assignee: Individual
•
Filing: 1946-04-19
•
Granted: 1951-03-13
•
Expires: 1966-04-19
Abstract
No abstract record available.
Inventors
- 👤 John W Meaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:06
CPC Classifications
A; A42; A42C; A42C1/00; A42C1/02; B; B26; B26F; B26F1/00; B26F1/26; B26F1/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1016716A
Cited
US1269617A
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US1250140A
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US1932057A
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US2141869A
Cited
US2248057A
Cited
US2296286A
Cited
US2365576A
Cited
US2385246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |