US2877319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical vibrator
Assignee: AT&T Inc
•
Filing: 1956-05-17
•
Granted: 1959-03-10
•
Expires: 1976-05-17
Abstract
No abstract record available.
Inventors
- 👤 Lee G Bostwick
- 👤 Robert L Guncelle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:43
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/64; H01H50/74; H01H50/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US322694A
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US524165A
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US711386A
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US821992A
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FR334196A
Cited
AT134721B
Cited
US2614188A
Cited
US2678360A
Cited
US2698366A
Cited
US2758173A
Cited
US2789177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |