US3494380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflatable structures
Assignee: Dunlop Rubber Co Ltd
•
Filing: 1966-07-27
•
Granted: 1970-02-10
•
Expires: 1986-07-27
Abstract
No abstract record available.
Inventors
- 👤 Erwin Herbert Erhard Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:07
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/04; F02C7/042; B; B64; B64C; B64C29/00; B64C29/0091; Y; Y10; Y10T; Y10T137/00; Y10T137/0536
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2737019A
Cited
GB832512A
Cited
US3074232A
Cited
US3119581A
Cited
US3224712A
Cited
US3285003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |