US2661540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hole gauge
Assignee: Individual
•
Filing: 1950-11-13
•
Granted: 1953-12-08
•
Expires: 1970-11-13
Abstract
No abstract record available.
Inventors
- 👤 John H Dulligan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:19
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/08; G01B5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE336996C
Cited
FR524392A
Cited
US1417001A
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US1554226A
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US1760717A
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US2047607A
Cited
US2135912A
Cited
CH224234A
Cited
US2358749A
Cited
GB582941A
Cited
GB612457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |