US2389460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal insulation and method of manufacture
Assignee: Johns Manville Corp
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Filing: 1943-03-05
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Granted: 1945-11-20
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Expires: 1963-03-05
Abstract
No abstract record available.
Inventors
- 👤 Harry H Rinehart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:39
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02; C04B26/04; C04B26/08; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C03C25/28; C04B2103/00; C04B2103/30; C04B2103/60; C04B2103/63
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) | 1948-11-19 | 1949-05-21 | 1949-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-11-19 | 1953-05-21 | 1953-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-11-19 | 1957-05-21 | 1957-11-20 | $7700.00 | Window Closed / Lapsed |