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US3027822A
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Diazotype developing apparatus
Assignee: GAF Chemicals Corp
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Filing: 1958-10-15
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Granted: 1962-04-03
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Expires: 1978-10-15
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Frantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:57
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/30; G03B27/303; G03D; G03D5/00; G03D5/003; G03D7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2918858A
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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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |