US3383230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphoric acid bonded asbestos fiber sheets and method of manufacture
Assignee: Johns Manville Corp
•
Filing: 1965-11-22
•
Granted: 1968-05-14
•
Expires: 1985-11-22
Abstract
No abstract record available.
Inventors
- 👤 Streib William Charles
- 👤 Shuih Chung-Hsiung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:42
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/34; C04B28/346; C04B28/342
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) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |