US2901913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetic sealing arrangements for electrical measuring instruments
Assignee: Daystrom Inc
•
Filing: 1955-03-03
•
Granted: 1959-09-01
•
Expires: 1975-03-03
Abstract
No abstract record available.
Inventors
- 👤 Lovegrove Henry Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:01
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/50; F16J15/52; F16J15/525; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20834; Y10T74/2087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US423337A
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US1614274A
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US1818973A
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US2539386A
Cited
US2610410A
Cited
US2552686A
Cited
US2615763A
Cited
US2784597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |