US2729200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid heater
Assignee: Individual
•
Filing: 1952-05-19
•
Granted: 1956-01-03
•
Expires: 1972-05-19
Abstract
No abstract record available.
Inventors
- 👤 Miller William Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:04
CPC Classifications
F; F23; F23K; F23K5/00; F23K5/02; F23K5/14; F23K5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US604052A
Cited
US795948A
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US1057566A
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US1180078A
Cited
US1265171A
Cited
GB366783A
Cited
GB377835A
Cited
GB399334A
Cited
US2055949A
Cited
US2020221A
Cited
US2141238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |