US2252345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating sheet material
Assignee: Warren SD Co
•
Filing: 1938-06-11
•
Granted: 1941-08-12
•
Expires: 1958-06-11
Abstract
No abstract record available.
Inventors
- 👤 Stanley J Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:55
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/0005; D21H5/006; D21H5/0062; D06; D06B; D06B3/00; D06B3/10; D21H25/00; D21H25/08; D06B2700/00; D06B2700/27
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) | 1944-08-11 | 1945-02-10 | 1945-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-08-11 | 1949-02-10 | 1949-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-08-11 | 1953-02-10 | 1953-08-12 | $7700.00 | Window Closed / Lapsed |