US2509568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve operating means for waxing and like devices
Assignee: Individual
•
Filing: 1946-01-24
•
Granted: 1950-05-30
•
Expires: 1966-01-24
Abstract
No abstract record available.
Inventors
- 👤 Lachapelle Rolland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:14
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/28; A47L13/30; A47L13/31; A47L13/312
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US438218A
Cited
US963214A
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US1199646A
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US1712681A
Cited
US1818917A
Cited
US2000167A
Cited
US2290375A
Cited
US2243607A
Cited
US2287216A
Cited
US2326669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-29 | 1953-11-28 | 1954-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-29 | 1957-11-28 | 1958-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-29 | 1961-11-28 | 1962-05-30 | $7700.00 | Window Closed / Lapsed |