Patent US1771870A successfully refreshed from Google Patents.
US1771870A
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US
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Blasting machine
Assignee: FIDELITY ELECTRIC Co
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Filing: 1929-08-05
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Granted: 1930-07-29
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Expires: 1949-08-05
Abstract
No abstract record available.
Inventors
- 👤 Charles P Banzhof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:20
CPC Classifications
F; F42; F42D; F42D1/00; F42D1/04; F42D1/045; H; H02; H02K; H02K7/00; H02K7/18; H02K7/1807; H02K7/1853
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1933-07-28 | 1934-01-27 | 1934-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-07-28 | 1938-01-27 | 1938-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-07-28 | 1942-01-27 | 1942-07-29 | $7700.00 | Window Closed / Lapsed |