US2438176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of gasproof compound fabrics
Assignee: CALLCO PRINTERS ASS Ltd
•
Filing: 1944-07-08
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Granted: 1948-03-23
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Expires: 1964-07-08
Abstract
No abstract record available.
Inventors
- 👤 Lantz Louis Amedee
- 👤 Schofield Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:06
CPC Classifications
D; D06; D06M; D06M17/00; D06M17/04; D06M17/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3602; Y10T442/3667
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-23 | 1951-09-22 | 1952-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-23 | 1955-09-22 | 1956-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-23 | 1959-09-22 | 1960-03-23 | $7700.00 | Window Closed / Lapsed |