Patent US2326884A successfully refreshed from Google Patents.
US2833937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compensator, regulator, and two-point compensator-regulator for photoelectric amplifier and sorting system
Assignee: Mandrel Industries Inc
•
Filing: 1952-06-19
•
Granted: 1958-05-06
•
Expires: 1972-06-19
Abstract
No abstract record available.
Inventors
- 👤 David C Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:28
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04; H01J43/30; B; B07; B07C; B07C5/00; B07C5/34; B07C5/342
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2673559A
Cited
US737200A
Cited
US2264621A
Cited
US2228560A
Cited
US2501743A
Cited
US2586804A
Cited
US2544340A
Cited
US2536693A
Cited
US2499921A
Cited
US2497691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |