US2830152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switch means and method of fabricating same
Assignee: Gilfillan Bros Inc
•
Filing: 1955-06-27
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Granted: 1958-04-08
•
Expires: 1975-06-27
Abstract
No abstract record available.
Inventors
- 👤 Homer G Tasker
- 👤 Eugene H Irasek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:03
CPC Classifications
H; H01; H01H; H01H36/00; H01H50/00; H01H50/54; H01H50/60; H01H51/00; H01H51/22; H01H51/2236; H01H51/2245; H01H51/2254
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US334185A
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US2140139A
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US2144498A
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US2253856A
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US2277215A
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US2483658A
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US2732458A
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US2756372A
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CH310054A
Cited
US2732454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |