Patent US2810022A successfully refreshed from Google Patents.
US2810022A
Expired / Lapsed
US
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Close-fitting helmet
Assignee: Individual
•
Filing: 1953-09-24
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Granted: 1957-10-15
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Expires: 1973-09-24
Abstract
No abstract record available.
Inventors
- 👤 Walter S Finken
- 👤 Jackson A Ailco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:43
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1354524A
Cited
GB189203A
Cited
US1810549A
Cited
US1991055A
Cited
US2343758A
Cited
US2394374A
Cited
US2468267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |