US2871699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating instrument for helicopters or the like
Assignee: Kenyon Laboratories LLC
•
Filing: 1956-02-21
•
Granted: 1959-02-03
•
Expires: 1976-02-21
Abstract
No abstract record available.
Inventors
- 👤 Theodore W Kenyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:46
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2001683A
Cited
US2105598A
Cited
US2218929A
Cited
US2130224A
Cited
US2318153A
Cited
US2395351A
Cited
US2531492A
Cited
US2567212A
Cited
US2695143A
Cited
US2738497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |