US3438129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutting tool
Assignee: Etc Inc
•
Filing: 1966-12-27
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Granted: 1969-04-15
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Expires: 1986-12-27
Abstract
No abstract record available.
Inventors
- 👤 Paul J Spangler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:33
CPC Classifications
B; B23; B23D; B23D29/00; B23D29/002; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8752; Y10T83/8772; Y10T83/8821; Y10T83/8858
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) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |