Patent US2661523A successfully refreshed from Google Patents.
US2661523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling and tanging machine
Assignee: Motors Liquidation Co
•
Filing: 1948-06-11
•
Granted: 1953-12-08
•
Expires: 1968-06-11
Abstract
No abstract record available.
Inventors
- 👤 Hooper J Houck
- 👤 Richard M Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:25
CPC Classifications
B; B23; B23Q; B23Q7/00; B23Q7/003; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T408/00; Y10T408/34; Y10T408/36; Y10T408/375; Y10T408/378; Y10T408/3792
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1757415A
Cited
US1846645A
Cited
US1812350A
Cited
US1986699A
Cited
US2049400A
Cited
US2227145A
Cited
US2238921A
Cited
US2302878A
Cited
US2249230A
Cited
US2392169A
Cited
US2371906A
Cited
US2462327A
Cited
US2475091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |