US2890305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed pressure sensitive switch having exteriorly suspended actuating means
Assignee: PARMATIC ENGINEERING Ltd
•
Filing: 1957-04-15
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Granted: 1959-06-09
•
Expires: 1977-04-15
Abstract
No abstract record available.
Inventors
- 👤 Gutkowski Janusz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:12
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/34; H01H21/00; H01H21/02; H01H21/04; H01H21/08; H01H21/085; H01H35/26; H01H35/2607
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US992009A
Cited
GB329447A
Cited
US1916717A
Cited
DE684356C
Cited
US2557929A
Cited
US2428096A
Cited
US2419180A
Cited
US2568332A
Cited
US2779838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |