US1937472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing foam
Assignee: United States Gypsum Co
•
Filing: 1929-11-25
•
Granted: 1933-11-28
•
Expires: 1949-11-25
Abstract
No abstract record available.
Inventors
- 👤 Ericson Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:29
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/50; C; C04; C04B; C04B28/00; C04B28/02; Y; Y10; Y10S; Y10S516/00; Y10S516/01
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) | 1936-11-27 | 1937-05-29 | 1937-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-11-27 | 1941-05-29 | 1941-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-11-27 | 1945-05-29 | 1945-11-28 | $7700.00 | Window Closed / Lapsed |