US2688211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible-tool driving machine
Assignee: LEMPCO PRODUCTS Inc
•
Filing: 1949-11-30
•
Granted: 1954-09-07
•
Expires: 1969-11-30
Abstract
No abstract record available.
Inventors
- 👤 James J Strnad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:55
CPC Classifications
B; B24; B24B; B24B33/00; B24B33/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1876468A
Cited
US520142A
Cited
US468682A
Cited
US759166A
Cited
US1100048A
Cited
US1423090A
Cited
US1530293A
Cited
US1978712A
Cited
US2000330A
Cited
US2301111A
Cited
US2238326A
Cited
US2286360A
Cited
US2349526A
Cited
US2354347A
Cited
US2483590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |