US2956495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable chimney
Assignee: Individual
•
Filing: 1957-02-28
•
Granted: 1960-10-18
•
Expires: 1977-02-28
Abstract
No abstract record available.
Inventors
- 👤 William L Sublette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:22
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/14; E04D13/147; E04D13/1473; E04D13/1475; E04F; E04F17/00; E04F17/02; E04F17/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US700762A
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US1192279A
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US1951824A
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US1966620A
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US2229212A
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US2376642A
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US2372707A
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US2381548A
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US2342058A
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US2457470A
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US2626557A
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US2821900A
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US2856837A
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US2800850A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |