US2623440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unitary work holder
Assignee: Individual
•
Filing: 1945-10-31
•
Granted: 1952-12-30
•
Expires: 1965-10-31
Abstract
No abstract record available.
Inventors
- 👤 Nipken Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:45
CPC Classifications
B; B25; B25B; B25B5/00; B25B5/06; B25B5/10; B25B5/104; B25B5/106; B25B5/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US142697A
Cited
US253889A
Cited
US348306A
Cited
US603025A
Cited
US651706A
Cited
GB139124A
Cited
US1801222A
Cited
US2153998A
Cited
GB544508A
Cited
US2349087A
Cited
US2499408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |