US2478031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of bourdon instruments
Assignee: Manning Maxwell and Moore Inc
•
Filing: 1944-12-05
•
Granted: 1949-08-02
•
Expires: 1964-12-05
Abstract
No abstract record available.
Inventors
- 👤 Gerrit A Visser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:05
CPC Classifications
G; G01; G01L; G01L7/00; G01L7/02; G01L7/04; G01L7/041; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1315327A
Cited
US1502873A
Cited
US647164A
Cited
US1838005A
Cited
US1902931A
Cited
US2192904A
Cited
US2310434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |