US3140824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam heating system
Assignee: Individual
•
Filing: 1958-08-25
•
Granted: 1964-07-14
•
Expires: 1978-08-25
Abstract
No abstract record available.
Inventors
- 👤 Everett W Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:02
CPC Classifications
F; F24; F24D; F24D1/00; F24D1/02; F24D19/00; F24D19/10; F24D19/1003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1498857A
Cited
US1783428A
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US2155255A
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US2276093A
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US2234869A
Cited
US2360665A
Cited
US2522373A
Cited
US2434575A
Cited
US2600252A
Cited
US2789769A
Cited
US2868461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |