US2232366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Range boiler or storage tank for domestic hot water and domestic hot water heaters
Assignee: Individual
•
Filing: 1937-12-18
•
Granted: 1941-02-18
•
Expires: 1957-12-18
Abstract
No abstract record available.
Inventors
- 👤 Eugene L Chappell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:01
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/181; F24H1/183; F16; F16L; F16L41/00; F16L41/08; F16L41/082; F16L41/084; F24H9/00; F24H9/12; F24H9/13; F24H9/133
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-02-18 | 1944-08-19 | 1945-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-18 | 1948-08-19 | 1949-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-18 | 1952-08-19 | 1953-02-18 | $7700.00 | Window Closed / Lapsed |