Patent US2491068A successfully refreshed from Google Patents.
US2491068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record stamper
Assignee: Individual
•
Filing: 1947-06-23
•
Granted: 1949-12-13
•
Expires: 1967-06-23
Abstract
No abstract record available.
Inventors
- 👤 William M Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:43
CPC Classifications
B; B29; B29D; B29D17/00; B29D17/002; B29C; B29C43/00; B29C43/02; B29C43/32; B29C43/36; B29C43/38; B29L; B29L2017/00; B29L2017/001; B29L2017/003; Y; Y10; Y10S; Y10S425/00; Y10S425/81
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US167527A
Cited
US326878A
Cited
US1372992A
Cited
US1576642A
Cited
US2258579A
Cited
US2336578A
Cited
US2354241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |