US3450481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Assembly for inspecting the interior of pipes or conduits
Assignee: JOSEPH J KRAMP
•
Filing: 1965-10-21
•
Granted: 1969-06-17
•
Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Kramp
- 👤 Theodore A Butts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:06
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/24; G02B23/2476
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1035426A
Cited
US1564432A
Cited
CH110148A
Cited
US2304045A
Cited
US2571964A
Cited
US3285122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |