Patent US3423573A successfully refreshed from Google Patents.
US3423573A
Expired / Lapsed
US
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Method and apparatus for heating rollers
Assignee: OI Glass Inc
•
Filing: 1965-09-07
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Granted: 1969-01-21
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Expires: 1985-09-07
Abstract
No abstract record available.
Inventors
- 👤 Raymond S Richards
- 👤 Douglass F St John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:01
CPC Classifications
B; B41; B41F; B41F13/00; B41F13/08; B41F13/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1819988A
Cited
US2448514A
Cited
US2831097A
Cited
US3020383A
Cited
US3146078A
Cited
US3105133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |