US3370860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Backing screw
Assignee: NA Woodworth Co
•
Filing: 1965-05-28
•
Granted: 1968-02-27
•
Expires: 1985-05-28
Abstract
No abstract record available.
Inventors
- 👤 Hohwart George
- 👤 Toth Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:28
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/102; F; F16; F16B; F16B2200/00; F16B2200/69; F16B2200/73; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10T; Y10T279/00; Y10T279/19; Y10T279/1986; Y10T403/00; Y10T403/32; Y10T403/32114; Y10T403/32196; Y10T403/32606; Y10T403/32631; Y10T403/32737; Y10T403/32778
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR596470A
Cited
US1849240A
Cited
US2427560A
Cited
US2714514A
Cited
US3054621A
Cited
US3151862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |