US2840314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating system
Assignee: Motors Liquidation Co
•
Filing: 1953-04-28
•
Granted: 1958-06-24
•
Expires: 1973-04-28
Abstract
No abstract record available.
Inventors
- 👤 Harold G Haines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:51
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/1927; G05D23/193; G05D23/1931
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1707296A
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US1795053A
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US2047234A
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US2083612A
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US2274153A
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US2333729A
Cited
US2257915A
Cited
US2266238A
Cited
US2282878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |