Patent US2639199A successfully refreshed from Google Patents.
US2639199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable bearing for surveying instruments
Assignee: Keuffel and Esser Co
•
Filing: 1948-12-01
•
Granted: 1953-05-19
•
Expires: 1968-12-01
Abstract
No abstract record available.
Inventors
- 👤 Patrosio William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:07
CPC Classifications
G; G01; G01C; G01C5/00; F; F16; F16C; F16C23/00; F16C23/02; F16C17/00; F16C17/02; F16C2370/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US600938A
Cited
US1323605A
Cited
USRE17265E
Cited
US915552A
Cited
US1057648A
Cited
US1067382A
Cited
US1716062A
Cited
GB426022A
Cited
GB493560A
Cited
US2224652A
Cited
US2272029A
Cited
US2448341A
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 |