Patent US3363675A successfully refreshed from Google Patents.
US3363675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot-water generator with heat-storage means
Assignee: RWE AG
•
Filing: 1966-03-22
•
Granted: 1968-01-16
•
Expires: 1986-03-22
Abstract
No abstract record available.
Inventors
- 👤 Bierhoff Rolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:16
CPC Classifications
F; F24; F24H; F24H7/00; F24H7/02; F24H7/04; F24H7/0408; F24H7/0433; F24D; F24D3/00; F24D3/02; F24D3/10; F24D3/1008; F24H1/00; F24H1/18; F24H1/20; F24H1/22; F24H1/225; F24H3/00; F24H3/006; F24H7/0208; F24H7/0233; Y; Y10; Y10S; Y10S165/00; Y10S165/902
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2058769A
Cited
US2341690A
Cited
US2395697A
Cited
US2901176A
Cited
US3105133A
Cited
US3269458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |