Patent US3131616A successfully refreshed from Google Patents.
US3131616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shouldering machine
Assignee: Individual
•
Filing: 1961-07-20
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Granted: 1964-05-05
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Expires: 1981-07-20
Abstract
No abstract record available.
Inventors
- 👤 Gostovich Nick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:56
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/18; E01C19/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US763679A
Cited
US805655A
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US1480620A
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US1748141A
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FR812323A
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US2522610A
Cited
US2731239A
Cited
US2848930A
Cited
US3015261A
Cited
US3109351A
Cited
US3031938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |