US1774573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making creped-paper-lined insulating material
Assignee: Wood Conversion Co
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Filing: 1929-05-09
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Granted: 1930-09-02
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Expires: 1949-05-09
Abstract
No abstract record available.
Inventors
- 👤 Allen L Spafford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:25
CPC Classifications
B; B31; B31D; B31D5/00; B31D5/0039; B31D5/0069; B31D2205/00; B31D2205/0005; B31D2205/0011; B31D2205/0017
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) | 1933-09-01 | 1934-03-03 | 1934-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-09-01 | 1938-03-03 | 1938-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-09-01 | 1942-03-03 | 1942-09-02 | $7700.00 | Window Closed / Lapsed |