Patent US2001632A successfully refreshed from Google Patents.
US2001632A
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Insulation against losses of heat and cold
Assignee: Individual
•
Filing: 1934-03-27
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Granted: 1935-05-14
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Expires: 1954-03-27
Abstract
No abstract record available.
Inventors
- 👤 Schlichting Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:42
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/36; E04C2/365; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/78; E04B1/80; E04B1/806; F; F16; F16L; F16L59/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24165
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) | 1938-05-13 | 1938-11-12 | 1939-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-05-13 | 1942-11-12 | 1943-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-05-13 | 1946-11-12 | 1947-05-14 | $7700.00 | Window Closed / Lapsed |