US2480657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water heater
Assignee: LAWSON Manufacturing Co
•
Filing: 1944-02-17
•
Granted: 1949-08-30
•
Expires: 1964-02-17
Abstract
No abstract record available.
Inventors
- 👤 Chester D Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:54
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/20; F24H1/205; F24H1/206
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1790454A
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US1995934A
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US2041313A
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CH176852A
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US2226816A
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US2251111A
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US2369235A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |