US3444731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tension resolver
Assignee: EIDP Inc
•
Filing: 1967-01-31
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Granted: 1969-05-20
•
Expires: 1987-01-31
Abstract
No abstract record available.
Inventors
- 👤 Gerrit Nieuweboer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:51
CPC Classifications
F; F28; F28F; F28F13/00; F28F13/06; B; B65; B65H; B65H59/00; B65H59/40; G; G01; G01L; G01L5/00; G01L5/04; B65H2553/00; B65H2553/20; B65H2553/22; B65H2701/00; B65H2701/30; B65H2701/31; B65H2701/313; B65H2701/3132; Y; Y10; Y10S; Y10S73/00; Y10S73/03
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) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |