US2448186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat insulation
Assignee: Keasbey and Mattison Co
•
Filing: 1942-06-29
•
Granted: 1948-08-31
•
Expires: 1962-06-29
Abstract
No abstract record available.
Inventors
- 👤 Lewis B Miller
- 👤 Willard R Seipt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:24
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/001; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249964
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2033106A
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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) | 1951-08-31 | 1952-03-01 | 1952-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-31 | 1956-03-01 | 1956-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-31 | 1960-03-01 | 1960-08-31 | $7700.00 | Window Closed / Lapsed |