US2765587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making fibrous glass sheet
Assignee: ECONOMATIC PRODUCTS Co
•
Filing: 1953-02-02
•
Granted: 1956-10-09
•
Expires: 1973-02-02
Abstract
No abstract record available.
Inventors
- 👤 Roy P Skerritt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:06
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4209; D04H1/4218; D04H1/4226; Y; Y10; Y10S; Y10S264/00; Y10S264/57; Y10S264/75; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T442/00; Y10T442/50; Y10T442/59
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) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |