US2975014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary file
Assignee: Individual
•
Filing: 1954-12-24
•
Granted: 1961-03-14
•
Expires: 1974-12-24
Abstract
No abstract record available.
Inventors
- 👤 Ernest A Dahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:08
CPC Classifications
A; A47; A47B; A47B63/00; A47B63/06; A47B63/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2341639A
Cited
US2343280A
Cited
US2477786A
Cited
US2575745A
Cited
US2656091A
Cited
US2698212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |