US2885950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible grill
Assignee: NIAGARA INSTR CORP
•
Filing: 1957-08-05
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Granted: 1959-05-12
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Expires: 1977-08-05
Abstract
No abstract record available.
Inventors
- 👤 Ralph K Stoll
- 👤 Arthur R Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:15
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/06; A47J37/07; A47J37/0731; A47J37/0718
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |