US2720132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work holding tool
Assignee: Individual
•
Filing: 1949-08-01
•
Granted: 1955-10-11
•
Expires: 1969-08-01
Abstract
No abstract record available.
Inventors
- 👤 Mark B Layne
- 👤 Lawrence L Held
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:51
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/40; B23B31/404; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53796; Y10T29/53848; Y10T29/53857; Y10T29/53878; Y10T29/53887; Y10T82/00; Y10T82/26; Y10T82/266; Y10T82/268
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US436223A
Cited
US447667A
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US465075A
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US854242A
Cited
US1654737A
Cited
US1705789A
Cited
US1840736A
Cited
US2255885A
Cited
US2518508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |