Patent US2831206A successfully refreshed from Google Patents.
US2831206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waxer
Assignee: Individual
•
Filing: 1954-11-16
•
Granted: 1958-04-22
•
Expires: 1974-11-16
Abstract
No abstract record available.
Inventors
- 👤 Donald D Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:03
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/16; A47L13/18; A47L13/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189409653A
Cited
US671296A
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US774558A
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US1038376A
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US1470903A
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US1789959A
Cited
US2147769A
Cited
US2621356A
Cited
US2613110A
Cited
US2663890A
Cited
US2753578A
Cited
GB716752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |