US2383066A
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Assignee: Johns Manville Corp
•
Filing: 1943-03-25
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Granted: 1945-08-21
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Expires: 1963-03-25
Abstract
No abstract record available.
Inventors
- 👤 Paul F Mcdermott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:53
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/20; B01D39/2068; B01D39/2082; B01D39/2089; B01D46/00; B01D46/10; Y; Y10; Y10S; Y10S417/00; Y10S417/01; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694
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) | 1948-08-20 | 1949-02-19 | 1949-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-08-20 | 1953-02-19 | 1953-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-08-20 | 1957-02-19 | 1957-08-21 | $7700.00 | Window Closed / Lapsed |