US2420644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flameproofing of fabrics and composition therefor
Assignee: Pemco Corp
•
Filing: 1942-06-16
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Granted: 1947-05-20
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Expires: 1962-06-16
Abstract
No abstract record available.
Inventors
- 👤 Lyman C Athy
- 👤 Paul C Stufft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:07
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/77; D06M11/79; D06M11/80; D06M11/82; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2664
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1471792A
Cited
US1813367A
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US1804417A
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US1896042A
Cited
US1896040A
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US2331357A
Cited
US2044176A
Cited
US2118787A
Cited
FR846522A
Cited
GB540642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-19 | 1950-11-18 | 1951-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-19 | 1954-11-18 | 1955-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-19 | 1958-11-18 | 1959-05-20 | $7700.00 | Window Closed / Lapsed |