US2550146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable cutting device
Assignee: Excel Tool & Die Co Inc
•
Filing: 1949-06-30
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Granted: 1951-04-24
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Expires: 1969-06-30
Abstract
No abstract record available.
Inventors
- 👤 Stephen G Gillich
- 👤 Bradner M Littlehale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:13
CPC Classifications
B; B23; B23D; B23D25/00; Y; Y10; Y10T; Y10T83/00; Y10T83/485; Y10T83/492; Y10T83/849; Y10T83/853; Y10T83/855; Y10T83/862; Y10T83/869; Y10T83/8789
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |