US2801801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined space heating and water heating system for a railway car
Assignee: Vapor Heating Corp
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Filing: 1954-01-26
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Granted: 1957-08-06
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Expires: 1974-01-26
Abstract
No abstract record available.
Inventors
- 👤 Laurance H Gillick
- 👤 Timothy J Lehane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:39
CPC Classifications
B; B61; B61D; B61D27/00; B61D27/0018
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |