US2617244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ring twisting
Assignee: Akzona Inc
•
Filing: 1949-09-16
•
Granted: 1952-11-11
•
Expires: 1969-09-16
Abstract
No abstract record available.
Inventors
- 👤 Kayser Guillaume Marie August
- 👤 Meys Johan Marie
- 👤 Pieter Van Dijk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:02
CPC Classifications
D; D01; D01H; D01H1/00; D01H1/10; D01H1/101; D01H1/14; D01H1/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US755450A
Cited
US1959452A
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GB326452A
Cited
US1976332A
Cited
US2246475A
Cited
US2410456A
Cited
US2417525A
Cited
US2431323A
Cited
US2463484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |