US2988843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drawing table
Assignee: INST FOR PRODUKTUDVIKLING
•
Filing: 1958-12-09
•
Granted: 1961-06-20
•
Expires: 1978-12-09
Abstract
No abstract record available.
Inventors
- 👤 Knudsen Anders Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:46
CPC Classifications
A; A47; A47B; A47B27/00; A47B27/04; A47B27/06; A47B27/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US971081A
Cited
US1568850A
Cited
US1956546A
Cited
US1925087A
Cited
US2539700A
Cited
GB663505A
Cited
US2605156A
Cited
FR1073762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |