US3488771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helmet latching and attaching ring
Assignee: RTX Corp
•
Filing: 1966-03-17
•
Granted: 1970-01-13
•
Expires: 1986-03-17
Abstract
No abstract record available.
Inventors
- 👤 Edward W Chase
- 👤 Seppo J Viikinsalo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:39
CPC Classifications
B; B64; B64D; B64D10/00; A; A41; A41D; A41D13/00; A41D13/0002; A41D13/0005; B63; B63C; B63C11/00; B63C11/02; B63C11/04; B63C11/06; Y; Y10; Y10T; Y10T292/00; Y10T292/20; Y10T292/205; Y10T292/212
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2394078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |