US2768449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Backlash comparator
Assignee: Akzo Nobel UK PLC
•
Filing: 1952-09-26
•
Granted: 1956-10-30
•
Expires: 1972-09-26
Abstract
No abstract record available.
Inventors
- 👤 Horace P Fry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:44
CPC Classifications
D; D01; D01H; D01H1/00; D01H1/14; D01H1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2170824A
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US2438229A
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GB191225439A
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US1377720A
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US1477257A
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FR827831A
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US2325362A
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US2581630A
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US2541641A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |