US1890418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat insulation
Assignee: Individual
•
Filing: 1932-09-28
•
Granted: 1932-12-06
•
Expires: 1952-09-28
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Krnst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:19
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/06; F16L59/07; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/7654; F16L59/08; F16L59/14; F16L59/16; F16L59/18; F16L59/184; Y; Y10; Y10S; Y10S220/00; Y10S220/09; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/23; Y10T428/239
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) | 1935-12-06 | 1936-06-06 | 1936-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-12-06 | 1940-06-06 | 1940-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-12-06 | 1944-06-06 | 1944-12-06 | $7700.00 | Window Closed / Lapsed |