Patent US3728852A successfully refreshed from Google Patents.
Patent US866457A successfully refreshed from Google Patents.
US866457A
Expired / Lapsed
US
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Compressed-air installation.
Assignee: PETER PILKINGTON Ltd
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Filing: 1904-10-10
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Granted: 1907-09-17
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Expires: 1924-10-10
Abstract
No abstract record available.
Inventors
- 👤 George James Gibbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:07
CPC Classifications
F; F04; F04B; F04B27/00; F04B27/04; F04B27/053; F15; F15B; F15B11/00; F15B11/16; F15B11/17; F04B1/00; F04B1/12; F04B1/20; F04B1/22; F04B41/00; F04B41/06
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) | 1910-09-16 | 1911-03-18 | 1911-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-09-16 | 1915-03-18 | 1915-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-09-16 | 1919-03-18 | 1919-09-17 | $7700.00 | Window Closed / Lapsed |