US2492654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-capacity internal-combustion heater for installations of limited size
Assignee: Motorola Solutions Inc
•
Filing: 1945-12-22
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Granted: 1949-12-27
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Expires: 1965-12-22
Abstract
No abstract record available.
Inventors
- 👤 John A Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:32
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/22; B60H1/2203; B60H1/2212; B60H2001/2268; B60H2001/2281; B60H2001/229
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2015195A
Cited
US2165269A
Cited
US2207776A
Cited
US2314089A
Cited
US2386462A
Cited
US2336609A
Cited
US2388970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |