US2483897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical precision gauge
Assignee: Hilger and Watts Ltd
•
Filing: 1946-02-26
•
Granted: 1949-10-04
•
Expires: 1966-02-26
Abstract
No abstract record available.
Inventors
- 👤 Godfrey Charles John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:08
CPC Classifications
G; G01; G01B; G01B11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB173512A
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CH153231A
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US2064145A
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GB410050A
Cited
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Cited
US2166101A
Cited
US2146906A
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US2233441A
Cited
GB559851A
Cited
US2360221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-03 | 1953-04-04 | 1953-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-03 | 1957-04-04 | 1957-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-03 | 1961-04-04 | 1961-10-04 | $7700.00 | Window Closed / Lapsed |