Patent US2738453A successfully refreshed from Google Patents.
US2738453A
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US
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Electrical condenser and method of making it
Assignee: Sprague Electric Co
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Filing: 1949-09-27
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Granted: 1956-03-13
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Expires: 1969-09-27
Abstract
No abstract record available.
Inventors
- 👤 Robinson Preston
- 👤 David B Peck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:01
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/20; H01G4/22; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
AN ELECTRICAL CONDUCTOR ON THE SURFACE OF WHICH IS A POROUS RESIN FILM, THE PORES OF WHICH ARE IMPREGNATED WITH AN IN SITU POLYMERIZED RESIN WHICH IS SUBSTANTIALLY IMCOMPATIBLE WITH SAID POROUS RESIN.
Claim 2
Dependent Claim
33 words
AN ELECTRICAL CONDUCTOR ON THE SURFACE OF WHICH IS A POROUS RESIN FILM, THE PORES OF WHICH ARE IMPREGNATED WITH AN IN SITU POLYMERIZED RESIN WHICH IS SUBSTANTIALLY IMCOMPATIBLE WITH SAID POROUS RESIN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |