Patent US2701103A successfully refreshed from Google Patents.
US2701103A
Expired / Lapsed
US
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Air supply for hot air furnaces
Assignee: Coleman Co Inc
•
Filing: 1950-10-25
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Granted: 1955-02-01
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Expires: 1970-10-25
Abstract
No abstract record available.
Inventors
- 👤 William C Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:20
CPC Classifications
F; F24; F24D; F24D5/00; F24D5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US353111A
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USRE20397E
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US657049A
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US2127095A
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US2300848A
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US2247896A
Cited
US2246602A
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US2364220A
Cited
US2468234A
Cited
US2559869A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |