US2168445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article of manufacture
Assignee: Johns Manville Corp
•
Filing: 1936-03-07
•
Granted: 1939-08-08
•
Expires: 1956-03-07
Abstract
No abstract record available.
Inventors
- 👤 John C Macildowie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:01
CPC Classifications
B; B43; B43L; B43L1/00; B43L1/04; B43L1/10; Y; Y10; Y10S; Y10S264/00; Y10S264/57
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) | 1942-08-07 | 1943-02-06 | 1943-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-08-07 | 1947-02-06 | 1947-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-08-07 | 1951-02-06 | 1951-08-08 | $7700.00 | Window Closed / Lapsed |