US1965636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-insulating wall
Assignee: Individual
•
Filing: 1930-09-08
•
Granted: 1934-07-10
•
Expires: 1950-09-08
Abstract
No abstract record available.
Inventors
- 👤 Forster Friedrich
- 👤 Krafft Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:05
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/78; E04B1/80; E04B1/806; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23929
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) | 1937-07-09 | 1938-01-08 | 1938-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-07-09 | 1942-01-08 | 1942-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-07-09 | 1946-01-08 | 1946-07-10 | $7700.00 | Window Closed / Lapsed |