US3016201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunnel cleaning machine
Assignee: I M TIFFIN
•
Filing: 1959-12-15
•
Granted: 1962-01-09
•
Expires: 1979-12-15
Abstract
No abstract record available.
Inventors
- 👤 Oren D Brogden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:26
CPC Classifications
E; E21; E21F; E21F5/00; E21F5/02; E21D; E21D9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US349087A
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US1551796A
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US1827583A
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FR818518A
Cited
US2345653A
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US2594992A
Cited
GB780941A
Cited
US2699967A
Cited
US2925222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-08 | 1965-07-10 | 1966-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-08 | 1969-07-10 | 1970-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-08 | 1973-07-10 | 1974-01-09 | $7700.00 | Window Closed / Lapsed |