US2726054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head shield for airplane occupants
Assignee: Goodyear Aircraft Corp
•
Filing: 1952-09-26
•
Granted: 1955-12-06
•
Expires: 1972-09-26
Abstract
No abstract record available.
Inventors
- 👤 Robert F Lesley
- 👤 Robert C Tompkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:30
CPC Classifications
B; B64; B64D; B64D25/00; B64D25/02; B64D25/08; B64D25/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1027764A
Cited
FR464351A
Cited
GB412717A
Cited
US2167969A
Cited
US2511168A
Cited
US2479713A
Cited
US2579683A
Cited
US2638293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |