Patent US6280475B1 successfully refreshed from Google Patents.
US2463983A
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US
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Flameproofing composition
Assignee: Individual
•
Filing: 1943-09-16
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Granted: 1949-03-08
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Expires: 1963-09-16
Abstract
No abstract record available.
Inventors
- 👤 Earl W Leatherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:25
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/08; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2028716A
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US2044176A
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US2286744A
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US2118787A
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US2299612A
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US2378715A
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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) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |