US2710972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warm weather flying helmet
Assignee: Individual
•
Filing: 1953-03-10
•
Granted: 1955-06-21
•
Expires: 1973-03-10
Abstract
No abstract record available.
Inventors
- 👤 Matthew I Radnofsky
- 👤 Dino A Mancinelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:07
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190521870A
Cited
US1691202A
Cited
US1831680A
Cited
GB508767A
Cited
US2409055A
Cited
US2520049A
Cited
US2579089A
Cited
US2556576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-20 | 1958-12-20 | 1959-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-20 | 1962-12-20 | 1963-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-20 | 1966-12-20 | 1967-06-21 | $7700.00 | Window Closed / Lapsed |