US3202356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot water heating systems having auxiliary pressurizing means
Assignee: TDK Micronas GmbH
•
Filing: 1962-12-28
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Granted: 1965-08-24
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Expires: 1982-12-28
Abstract
No abstract record available.
Inventors
- 👤 Donald B Gardner
- 👤 Frank E Dameron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:27
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/08; F24D19/082; F24D19/083; F24D3/00; F24D3/02; F24D3/04; F24D3/06; F24D3/10; F24D3/1008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA592656A
Cited
US1294517A
Cited
DE451367C
Cited
DE560332C
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US2753120A
Cited
US2888204A
Cited
US3095012A
Cited
US3134543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |