US1718507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat insulation of walls
Assignee: Individual
•
Filing: 1923-12-17
•
Granted: 1929-06-25
•
Expires: 1943-12-17
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Wenzel
- 👤 Maximillian P Janisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:34
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B05B7/1481; B05B7/149; B05B7/1495; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/7604; E04F; E04F21/00; E04F21/02; E04F21/06; E04F21/08; E04F21/12; Y; Y10; Y10S; Y10S62/00; Y10S62/13
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) | 1932-06-24 | 1932-12-24 | 1933-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-06-24 | 1936-12-24 | 1937-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-06-24 | 1940-12-24 | 1941-06-25 | $7700.00 | Window Closed / Lapsed |