US3036663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating systems for vertical lifting apparatus
Assignee: Chemetron Corp
•
Filing: 1960-07-01
•
Granted: 1962-05-29
•
Expires: 1980-07-01
Abstract
No abstract record available.
Inventors
- 👤 William T Burka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:33
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US77584A
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US387936A
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US1098931A
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US2313627A
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US2494401A
Cited
US2774437A
Cited
US2841174A
Cited
US2935161A
Cited
US2935213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-28 | 1965-11-27 | 1966-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-28 | 1969-11-27 | 1970-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-28 | 1973-11-27 | 1974-05-29 | $7700.00 | Window Closed / Lapsed |