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Patent US2272948A successfully refreshed from Google Patents.
US2272948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair
Assignee: General Fireproofing Co
•
Filing: 1939-08-05
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Granted: 1942-02-10
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Expires: 1959-08-05
Abstract
No abstract record available.
Inventors
- 👤 Johnson Eric Magnus
- 👤 Powell Dwight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:55
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/24; A47C7/26
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) | 1945-02-09 | 1945-08-11 | 1946-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-02-09 | 1949-08-11 | 1950-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-02-09 | 1953-08-11 | 1954-02-10 | $7700.00 | Window Closed / Lapsed |