US2313082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making coherent materials
Assignee: JOHN U BIRNIE
•
Filing: 1941-05-16
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Granted: 1943-03-09
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Expires: 1961-05-16
Abstract
No abstract record available.
Inventors
- 👤 James A Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:21
CPC Classifications
B; B27; B27K; B27K7/00; B27K2200/00; B27K2200/10; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/926; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3167; Y10T442/00; Y10T442/20
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) | 1946-03-08 | 1946-09-07 | 1947-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-03-08 | 1950-09-07 | 1951-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-03-08 | 1954-09-07 | 1955-03-09 | $7700.00 | Window Closed / Lapsed |