Patent US2788684A successfully refreshed from Google Patents.
US2788684A
Expired / Lapsed
US
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Drilling jig
Assignee: Individual
•
Filing: 1953-04-08
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Granted: 1957-04-16
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Expires: 1973-04-08
Abstract
No abstract record available.
Inventors
- 👤 John H Scharf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:48
CPC Classifications
B; B25; B25H; B25H1/00; B25H1/0021; B25H1/0078; B23; B23B; B23B49/00; B23B49/02; Y; Y10; Y10T; Y10T408/00; Y10T408/55
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US482616A
Cited
US1073362A
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US1403149A
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US2224480A
Cited
US2360942A
Cited
US2353295A
Cited
US2488279A
Cited
US2428201A
Cited
GB636815A
Cited
US2708972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-15 | 1960-10-15 | 1961-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-15 | 1964-10-15 | 1965-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-15 | 1968-10-15 | 1969-04-16 | $7700.00 | Window Closed / Lapsed |