US2515974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overflow hot-water tank, preferably with electric heating, for a plurality of tapping places, without floating valve cistern
Assignee: SARPSBORG ELEK SE FABRIKKER
•
Filing: 1945-10-22
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Granted: 1950-07-18
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Expires: 1965-10-22
Abstract
No abstract record available.
Inventors
- 👤 Araldsen Peder Olaf Gothard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:16
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/20; F24H1/201; F24H1/202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |