US2413331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat insulation
Assignee: Individual
•
Filing: 1941-04-05
•
Granted: 1946-12-31
•
Expires: 1961-04-05
Abstract
No abstract record available.
Inventors
- 👤 Munters Carl Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:40
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/32; E04C2/322; D; D21; D21J; D21J1/00; D21J1/16; E04B; E04B1/00; E04B1/62; Y; Y10; Y10S; Y10S220/00; Y10S220/09; Y10S428/00; Y10S428/92; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1025; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24711; Y10T428/24727
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) | 1949-12-30 | 1950-07-01 | 1950-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-12-30 | 1954-07-01 | 1954-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-12-30 | 1958-07-01 | 1958-12-31 | $7700.00 | Window Closed / Lapsed |