US3032298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airplane fuselage construction with helium lift
Assignee: Individual
•
Filing: 1959-10-29
•
Granted: 1962-05-01
•
Expires: 1979-10-29
Abstract
No abstract record available.
Inventors
- 👤 Francis P Callahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:53
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/02; B64C; B64C1/00; B64C1/06; B64C1/061; B64C1/12; Y; Y02; Y02T; Y02T50/00; Y02T50/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR958796A
Cited
US1301981A
Cited
US1419446A
Cited
US1972005A
Cited
US2116953A
Cited
US2233969A
Cited
US2394259A
Cited
US2741447A
Cited
GB731515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-30 | 1965-10-30 | 1966-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-30 | 1969-10-30 | 1970-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-30 | 1973-10-30 | 1974-05-01 | $7700.00 | Window Closed / Lapsed |