Patent US632506A successfully refreshed from Google Patents.
US632506A
Expired / Lapsed
US
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Heating and ventilating or refrigerating apparatus and system.
Assignee: Individual
•
Filing: 1898-10-17
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Granted: 1899-09-05
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Expires: 1918-10-17
Abstract
No abstract record available.
Inventors
- 👤 William E Allington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:08
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/0233; F28D1/024; Y; Y10; Y10S; Y10S165/00; Y10S165/228; Y10S165/302; Y10S165/303
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1902-09-05 | 1903-03-07 | 1903-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1906-09-05 | 1907-03-07 | 1907-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1910-09-05 | 1911-03-07 | 1911-09-06 | $7700.00 | Window Closed / Lapsed |