US3495359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core drill
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1968-10-10
•
Granted: 1970-02-17
•
Expires: 1988-10-10
Abstract
No abstract record available.
Inventors
- 👤 Leonard I Smith
- 👤 Cornelius Phaal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:51
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/48; B; B28; B28D; B28D1/00; B28D1/02; B28D1/04; B28D1/041; E21B10/006; Y; Y10; Y10T; Y10T408/00; Y10T408/44; Y10T408/45; Y10T408/455; Y10T408/81; Y10T408/89; Y10T408/895
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) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |