US2772422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lifting mechanism for toilet seats
Assignee: Individual
•
Filing: 1954-07-27
•
Granted: 1956-12-04
•
Expires: 1974-07-27
Abstract
No abstract record available.
Inventors
- 👤 Richard R Knudsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:37
CPC Classifications
A; A47; A47K; A47K13/00; A47K13/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US985239A
Cited
US1050395A
Cited
DE610953C
Cited
US2042276A
Cited
US2214323A
Cited
GB635971A
Cited
US2705330A
Cited
GB662425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |