US2954076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating spacer and making same
Assignee: Alpha Res Corp
•
Filing: 1958-06-26
•
Granted: 1960-09-27
•
Expires: 1978-06-26
Abstract
No abstract record available.
Inventors
- 👤 Samuel P Crane
- 👤 Stephen D Kent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:42
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/42; A47C7/425; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/24479; Y10T428/24562; Y10T428/2457
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) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |