US2959974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forward and reverse friction drive tapping attachment
Assignee: Individual
•
Filing: 1958-05-28
•
Granted: 1960-11-15
•
Expires: 1978-05-28
Abstract
No abstract record available.
Inventors
- 👤 Melvin H Emrick
- 👤 Dorothea A Emrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:40
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/22; F16D13/24; F16D13/26; Y; Y10; Y10T; Y10T408/00; Y10T408/65; Y10T408/70; Y10T408/72; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19484; Y10T74/19498
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) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |