US2148137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Covering structure
Assignee: Congoleum Industries Inc
•
Filing: 1936-05-14
•
Granted: 1939-02-21
•
Expires: 1956-05-14
Abstract
No abstract record available.
Inventors
- 👤 Donald H Spitzli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:43
CPC Classifications
D; D06; D06N; D06N7/00; D06N7/0063; D06N7/0089; A; A47; A47G; A47G27/00; A47G27/04; A47G27/0437; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/28; Y10T428/2813; Y10T428/283; Y10T428/31504; Y10T428/31725; Y10T428/31768; Y10T428/31772; Y10T428/31775; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2049; Y10T442/2057; Y10T442/2066
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1942-02-20 | 1942-08-22 | 1943-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-20 | 1946-08-22 | 1947-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-20 | 1950-08-22 | 1951-02-21 | $7700.00 | Window Closed / Lapsed |