US3456903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airship
Assignee: Individual
•
Filing: 1967-04-07
•
Granted: 1969-07-22
•
Expires: 1987-04-07
Abstract
No abstract record available.
Inventors
- 👤 Hermann Ernst Robert Papst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:54
CPC Classifications
B; B64; B64B; B64B1/00; B64B1/58; B64B1/64; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B64B1/06; B64B1/12; B64B1/60; B64B1/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |