US2383641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas burning apparatus
Assignee: Perfection Stove Co
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Filing: 1941-10-06
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Granted: 1945-08-28
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Expires: 1961-10-06
Abstract
No abstract record available.
Inventors
- 👤 Theodore B Focke
- 👤 Dahlstrom John Alger
- 👤 Joseph R Kirkpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:44
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/62; F23D14/64; F04; F04F; F04F5/00; F04F5/44; F04F5/46; F04F5/467; F23D14/60; F23N; F23N1/00; F23N1/005; F23D2900/00; F23D2900/14; F23D2900/14642; F23N2235/00; F23N2235/12; F23N2235/14; F23N2237/00; F23N2237/02; F23N2237/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-08-27 | 1949-02-26 | 1949-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-08-27 | 1953-02-26 | 1953-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-08-27 | 1957-02-26 | 1957-08-28 | $7700.00 | Window Closed / Lapsed |