US2870709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroformed articles and process for their manufacture
Assignee: EIDP Inc
•
Filing: 1955-10-28
•
Granted: 1959-01-27
•
Expires: 1975-10-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Edwin D Boelter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:24
CPC Classifications
F; F42; F42B; F42B1/00; F42B1/02; F42B1/036; F42B1/032
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
IN A JET PERFORATOR COMPRISING A SHAPED CHARGE MEANS FOR DETONATING SAID SHAPED CHARGE, A CONTAINER SUBSTANTIALLY SURROUNDING THE SHAPED CHARGE AND A CAVITY IN THE BASE OF THE SAME, A LINING IN SAID CAVITY COMPRISING A SUBSTANTIALLY STRAIN-FREE COPPER CONE PRODUCED BY ELEC-
Claim 2
Dependent Claim
44 words
IN A JET PERFORATOR COMPRISING A SHAPED CHARGE MEANS FOR DETONATING SAID SHAPED CHARGE, A CONTAINER SUBSTANTIALLY SURROUNDING THE SHAPED CHARGE AND A CAVITY IN THE BASE OF THE SAME, A LINING IN SAID CAVITY COMPRISING A SUBSTANTIALLY STRAIN-FREE COPPER CONE PRODUCED BY ELEC-
References Cited (Backward Citations)
US2732336A
Cited
US2605703A
Cited
US2684030A
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US2549678A
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US2694677A
Cited
US2708408A
Cited
US2701234A
Cited
US2692850A
Cited
US2706170A
Cited
US2770587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |