Patent US2649983A successfully refreshed from Google Patents.
US2649983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skip
Assignee: LAKE SHORE ENGINEERING Co
•
Filing: 1951-03-26
•
Granted: 1953-08-25
•
Expires: 1971-03-26
Abstract
No abstract record available.
Inventors
- 👤 Finlay Alexander
- 👤 James W Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:33
CPC Classifications
B; B66; B66B; B66B17/00; B66B17/08; B66B17/14; B66B17/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1496007A
Cited
DE408734C
Cited
DE431179C
Cited
US1720388A
Cited
US2479449A
Cited
US2424620A
Cited
US2545170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |