US2870569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Model airplane construction
Assignee: STROMBECK BECKER Manufacturing CO
•
Filing: 1957-07-29
•
Granted: 1959-01-27
•
Expires: 1977-07-29
Abstract
No abstract record available.
Inventors
- 👤 Harold A Bergstrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:21
CPC Classifications
A; A63; A63H; A63H27/00; A63H27/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191000037A
Cited
US1568319A
Cited
US2407720A
Cited
US2555670A
Cited
US2599957A
Cited
US2560742A
Cited
US2770072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |