Patent US3388653A successfully refreshed from Google Patents.
US3388653A
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Film processing apparatus
Assignee: WILLIAM C MAYFIELD
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Filing: 1965-07-01
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Granted: 1968-06-18
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Expires: 1985-07-01
Abstract
No abstract record available.
Inventors
- 👤 William C Mayfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:55
CPC Classifications
G; G03; G03D; G03D11/00; G03D13/00; G03D13/006; G03D3/00; G03D3/02; G03D3/06; G03D3/08; G03D3/13; G03D3/135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1666999A
Cited
US1533546A
Cited
US2837988A
Cited
US2912915A
Cited
GB909788A
Cited
US3087405A
Cited
US3261278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |