Patent US3411196A successfully refreshed from Google Patents.
US3411196A
Expired / Lapsed
US
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Central heating radiator
Assignee: Zehnder Group AG
•
Filing: 1967-03-24
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Granted: 1968-11-19
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Expires: 1987-03-24
Abstract
No abstract record available.
Inventors
- 👤 Zehnder Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:37
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/06; B21D53/04; F; F28; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053; F28D1/05316; F28D1/05333; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373; Y10T29/49393
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2007001A
Cited
GB568567A
Cited
GB574450A
Cited
US2636752A
Cited
GB776575A
Cited
US3113615A
Cited
US3231017A
Cited
US3246691A
Cited
US3245465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |