US2656833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas heater
Assignee: Individual
•
Filing: 1948-10-14
•
Granted: 1953-10-27
•
Expires: 1968-10-14
Abstract
No abstract record available.
Inventors
- 👤 William O Moran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:09
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US939925A
Cited
US975868A
Cited
GB191327807A
Cited
US1162205A
Cited
US1811323A
Cited
US1839655A
Cited
US1842625A
Cited
GB354153A
Cited
US2158643A
Cited
US2192920A
Cited
US2400117A
Cited
US2420599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |