Patent US2991061A successfully refreshed from Google Patents.
US2991061A
Expired / Lapsed
US
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Furnace divider plates
Assignee: American Brake Shoe Co
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Filing: 1958-03-05
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Granted: 1961-07-04
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Expires: 1978-03-05
Abstract
No abstract record available.
Inventors
- 👤 Frank J Boron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:17
CPC Classifications
F; F27; F27D; F27D99/00; F27D99/007; C; C21; C21B; C21B7/00; C21B7/08; F27B; F27B3/00; F27B3/10; F27D9/00; F27D2009/0002; F27D2009/0005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US438667A
Cited
US626657A
Cited
US869616A
Cited
GB190695A
Cited
US1869705A
Cited
CH206665A
Cited
US2824730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |