US3509738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knitting machines
Assignee: Individual
•
Filing: 1967-11-14
•
Granted: 1970-05-05
•
Expires: 1987-11-14
Abstract
No abstract record available.
Inventors
- 👤 Karl Flad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:33
CPC Classifications
D; D04; D04B; D04B15/00; D04B15/66; D04B15/68; D04B15/78
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1795235A
Cited
US2153342A
Cited
US2072969A
Cited
US2157989A
Cited
US2173488A
Cited
US3035426A
Cited
FR1251516A
Cited
US3292393A
Cited
US3313128A
Cited
US3370443A
Cited
US3375681A
Cited
US3365916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |