Patent US2989046A successfully refreshed from Google Patents.
US2989046A
Expired / Lapsed
US
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Method for drilling finished holes in glass
Assignee: Paramount Pictures Corp
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Filing: 1958-06-05
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Granted: 1961-06-20
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Expires: 1978-06-05
Abstract
No abstract record available.
Inventors
- 👤 Charles W Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:54
CPC Classifications
B; B28; B28D; B28D1/00; B28D1/02; B28D1/04; B28D1/041; Y; Y10; Y10T; Y10T408/00; Y10T408/03; Y10T408/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US495000A
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US1276683A
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US1825277A
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US1826625A
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US2092083A
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US2413084A
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US2671978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |