Patent FR955651A successfully refreshed from Google Patents.
Patent US1338676A successfully refreshed from Google Patents.
US1338676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage of energy due to an explosion
Assignee: Individual
•
Filing: 1918-12-02
•
Granted: 1920-05-04
•
Expires: 1938-12-02
Abstract
No abstract record available.
Inventors
- 👤 Constantinesco George
- 👤 Middleton John Rickards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:42
CPC Classifications
F; F41; F41A; F41A1/00; Y; Y10; Y10S; Y10S60/00; Y10S60/914
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) | 1923-05-04 | 1923-11-03 | 1924-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-05-04 | 1927-11-03 | 1928-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-05-04 | 1931-11-03 | 1932-05-04 | $7700.00 | Window Closed / Lapsed |