Patent US1707940A successfully refreshed from Google Patents.
US1707940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenol-acetylene resin
Assignee: CANADIAN ELECTRO PROD CO
•
Filing: 1922-05-13
•
Granted: 1929-04-02
•
Expires: 1942-05-13
Abstract
No abstract record available.
Inventors
- 👤 Howard W Matheson
- 👤 Julius A Nieuwland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:20
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/38; C08G61/00; C08G61/02; C08L; C08L65/00
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) | 1932-04-01 | 1932-10-01 | 1933-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-04-01 | 1936-10-01 | 1937-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-04-01 | 1940-10-01 | 1941-04-02 | $7700.00 | Window Closed / Lapsed |