US2507433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fire polishing glassware
Assignee: BORCHERT
•
Filing: 1943-07-14
•
Granted: 1950-05-09
•
Expires: 1963-07-14
Abstract
No abstract record available.
Inventors
- 👤 Clarence A Borchert
- 👤 Robert H Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:57
CPC Classifications
C; C03; C03B; C03B29/00; C03B29/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1667146A
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US766193A
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US877729A
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US959500A
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US1178256A
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US1594557A
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US2073144A
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US2209252A
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US2371486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |