US2642850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating plant
Assignee: Miller Co
•
Filing: 1950-02-09
•
Granted: 1953-06-23
•
Expires: 1970-02-09
Abstract
No abstract record available.
Inventors
- 👤 Lancey Ralph W De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:32
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/22; F24H1/24; F24H1/26; F24H1/28; F24H1/287
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US172302A
Cited
US503834A
Cited
US517745A
Cited
US525932A
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US660761A
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US715638A
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US799120A
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US1184936A
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GB154080A
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US1700269A
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US1745204A
Cited
US1613615A
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US1918935A
Cited
US2068441A
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US1986561A
Cited
GB420012A
Cited
US2064080A
Cited
US2063261A
Cited
US2162572A
Cited
US2266551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |