Patent US2879518A successfully refreshed from Google Patents.
US2879518A
Expired / Lapsed
US
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Hat
Assignee: Individual
•
Filing: 1956-04-17
•
Granted: 1959-03-31
•
Expires: 1976-04-17
Abstract
No abstract record available.
Inventors
- 👤 Welton Charles L Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:34
CPC Classifications
A; A42; A42B; A42B1/00; A42B1/22; A42B1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US39822A
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US260333A
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US917210A
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US1186838A
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US1636889A
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US1787378A
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US2043330A
Cited
US2437525A
Cited
US2445922A
Cited
US2725571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |