Patent US2937644A successfully refreshed from Google Patents.
Patent US2533013A successfully refreshed from Google Patents.
US2533013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the twostage draw of synthetic funicular structures
Assignee: EIDP Inc
•
Filing: 1949-04-27
•
Granted: 1950-12-05
•
Expires: 1969-04-27
Abstract
No abstract record available.
Inventors
- 👤 Hume Harold Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:31
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/228; D01; D01F; D01F6/00; D01F6/58; D01F6/62; Y; Y10; Y10S; Y10S425/00; Y10S425/017; Y10S8/00; Y10S8/04; Y10S8/21
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB479492A
Cited
US2325060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |