Patent US1242900A successfully refreshed from Google Patents.
US1242900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing an explosive compound.
Assignee: Individual
•
Filing: 1916-04-10
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Granted: 1917-10-09
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Expires: 1936-04-10
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Twining
- 👤 Ralph W G Wyckoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:04
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/28; C07C309/45; C07C309/46
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) | 1920-10-08 | 1921-04-09 | 1921-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-10-08 | 1925-04-09 | 1925-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-10-08 | 1929-04-09 | 1929-10-09 | $7700.00 | Window Closed / Lapsed |