US2800309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immersion vibrator
Assignee: VIBRO PLUS CORP
•
Filing: 1953-09-02
•
Granted: 1957-07-23
•
Expires: 1973-09-02
Abstract
No abstract record available.
Inventors
- 👤 Giertz-Hedstrom Stig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:33
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/02; E04G21/06; E04G21/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2148722A
Cited
US2018789A
Cited
US2194410A
Cited
US2360803A
Cited
US2437983A
Cited
US2500293A
Cited
US2649286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |