US3237274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making extended foil capacitors
Assignee: AT&T Inc
•
Filing: 1963-03-14
•
Granted: 1966-03-01
•
Expires: 1983-03-14
Abstract
No abstract record available.
Inventors
- 👤 Robert F Kalina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:11
CPC Classifications
H; H01; H01G; H01G13/00; H01G13/006; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A METHOD OF MAKING A CAPACITOR WHICH COMPRISES WINDING A PAIR OF FOILS AND A PAIR OF DIELECTRIC WEBS TO FORM A CAPACITOR UNIT WITH THE FOILS SUPPORTED IN INSULATED AND PARTIALLY OVERLAPPING RELATION TO EACH OTHER AND WITH A MARGINAL PORTION OF EACH FOIL EXTENDING BEYOND THE DIELECTRIC WEBS AND WITH SAID MARGINAL PORTIONS DISPOSED,
Claim 2
Independent Claim
56 words
A METHOD OF MAKING A CAPACITOR WHICH COMPRISES WINDING A PAIR OF FOILS AND A PAIR OF DIELECTRIC WEBS TO FORM A CAPACITOR UNIT WITH THE FOILS SUPPORTED IN INSULATED AND PARTIALLY OVERLAPPING RELATION TO EACH OTHER AND WITH A MARGINAL PORTION OF EACH FOIL EXTENDING BEYOND THE DIELECTRIC WEBS AND WITH SAID MARGINAL PORTIONS DISPOSED,
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |