US2721706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating apparatus
Assignee: TACO HEATERS Inc
•
Filing: 1951-10-02
•
Granted: 1955-10-25
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Expires: 1971-10-02
Abstract
No abstract record available.
Inventors
- 👤 Rudolph T Schoerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:15
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/10; F24D19/1006; F24D19/1066; F24H; F24H15/00; F24H15/20; F24H15/212; F24H15/219; F24H15/254; F24H15/258; F24H15/30; F24H15/305; F24H15/31; F24H15/335; F24H15/355; F24H15/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2067629A
Cited
US2065481A
Cited
US2162337A
Cited
US2194805A
Cited
US2539469A
Cited
US2481297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |