US2844859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Threading-in parallel ends
Assignee: Akzona Inc
•
Filing: 1951-12-17
•
Granted: 1958-07-29
•
Expires: 1971-12-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Ernest J Griset
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:18
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0463
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1822018A
Cited
US2115025A
Cited
US2227718A
Cited
US2371638A
Cited
US2392268A
Cited
US2412403A
Cited
US2415399A
Cited
US2657565A
Cited
US2648890A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |