US3436990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spade drill
Assignee: Individual
•
Filing: 1965-12-27
•
Granted: 1969-04-08
•
Expires: 1985-12-27
Abstract
No abstract record available.
Inventors
- 👤 Asher Tourison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:12
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/06; B23B51/0002; B23B51/0003; B23B51/00035; B23B51/068; B23B51/0684; B23B2251/00; B23B2251/50; Y; Y10; Y10T; Y10T408/00; Y10T408/44
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) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |