Patent US2017763A successfully refreshed from Google Patents.
US2017763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Checkerwork construction
Assignee: Individual
•
Filing: 1935-01-18
•
Granted: 1935-10-15
•
Expires: 1955-01-18
Abstract
No abstract record available.
Inventors
- 👤 Samuel L Mamula
- 👤 Muhvich Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:21
CPC Classifications
C; C21; C21B; C21B9/00; C21B9/02; C21B9/06; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/03; Y10S165/035
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) | 1938-10-14 | 1939-04-15 | 1939-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-10-14 | 1943-04-15 | 1943-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-10-14 | 1947-04-15 | 1947-10-15 | $7700.00 | Window Closed / Lapsed |