US2638680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Averaging protractor for matching aircraft propeller blades
Assignee: Baker Manufacturing Co LLC
•
Filing: 1947-05-07
•
Granted: 1953-05-19
•
Expires: 1967-05-07
Abstract
No abstract record available.
Inventors
- 👤 John G Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:16
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/20; G01B5/205
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2402567A
Cited
US1806756A
Cited
US2481062A
Cited
US1862008A
Cited
US2011931A
Cited
US2098654A
Cited
US2000281A
Cited
US2016420A
Cited
DE661230C
Cited
US2179822A
Cited
US2238782A
Cited
US2303858A
Cited
US2400942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |