Patent US2811962A successfully refreshed from Google Patents.
US2811962A
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US
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Forced air ventilating heaters
Assignee: MORRISON PELSUE CO
•
Filing: 1954-05-27
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Granted: 1957-11-05
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Expires: 1974-05-27
Abstract
No abstract record available.
Inventors
- 👤 Thurman A Pelsue
- 👤 Lloyd W Braa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:27
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/06; F24H3/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2164377A
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US2121108A
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US2299901A
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US2405427A
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US2410353A
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US2538492A
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US2582071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |