Patent US4619262A successfully refreshed from Google Patents.
Patent US2850870A successfully refreshed from Google Patents.
US2850870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bi-metallic bourdon tube
Assignee: Motors Liquidation Co
•
Filing: 1952-07-25
•
Granted: 1958-09-09
•
Expires: 1972-07-25
Abstract
No abstract record available.
Inventors
- 👤 Edward J Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:22
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1919; G05D23/1921
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1881884A
Cited
US393132A
Cited
US2572162A
Cited
US1046777A
Cited
US1052816A
Cited
US1258368A
Cited
US1441549A
Cited
US1492450A
Cited
US1676921A
Cited
US1676923A
Cited
US1963328A
Cited
US1984008A
Cited
US1882726A
Cited
US2451840A
Cited
US2415768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |