US3397625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing helically wound cylinders
Assignee: Dietz Machine Works Inc
•
Filing: 1965-10-11
•
Granted: 1968-08-20
•
Expires: 1985-10-11
Abstract
No abstract record available.
Inventors
- 👤 Leonardi Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:05
CPC Classifications
F; F16; F16C; F16C39/00; F16C39/06; F16C39/063; B; B31; B31C; B31C3/00; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8765
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US549667A
Cited
US2603289A
Cited
US2699099A
Cited
US3080784A
Cited
US3256128A
Cited
US3279229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |