US2445231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for making tubular coverings
Assignee: Johns Manville Corp
•
Filing: 1944-09-09
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Granted: 1948-07-13
•
Expires: 1964-09-09
Abstract
No abstract record available.
Inventors
- 👤 Paul F Mcdermott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:03
CPC Classifications
D; D04; D04B; D04B9/00; D04B9/42; D04B9/44; D04B1/00; D04B1/22; D04B1/225; D04B15/00; D04B15/88; D10; D10B; D10B2403/00; D10B2403/01; D10B2403/011; D10B2403/0112; D10B2403/02; D10B2403/024; D10B2403/0243
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-13 | 1952-01-12 | 1952-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-13 | 1956-01-12 | 1956-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-13 | 1960-01-12 | 1960-07-13 | $7700.00 | Window Closed / Lapsed |