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US2935926A
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US
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Register for heating and air conditioning systems
Assignee: United States Register Co
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Filing: 1956-08-27
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Granted: 1960-05-10
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Expires: 1976-08-27
Abstract
No abstract record available.
Inventors
- 👤 Wilbert J Parrish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:04
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US748669A
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US680657A
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US936440A
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US1969437A
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US2209384A
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US2285984A
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US2492909A
Cited
US2500330A
Cited
US2511490A
Cited
US2712281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |