US3337714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating device
Assignee: Individual
•
Filing: 1964-02-03
•
Granted: 1967-08-22
•
Expires: 1984-02-03
Abstract
No abstract record available.
Inventors
- 👤 Werner W Buechner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:10
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/08; G03D3/10; F; F24; F24H; F24H1/00; F24H1/10; F24H1/101; F24H1/102; G03D13/00; G03D13/006; G03D13/02; G03D13/04; G03D13/046; G03D13/08; G03D13/12; G03D3/02; G03D3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1183925A
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US1746522A
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US1772834A
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US1792757A
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US1967889A
Cited
US1985280A
Cited
US2690764A
Cited
US2852232A
Cited
US2791890A
Cited
US2743909A
Cited
US2969451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |